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                      <li><a href="./api.html#pubs">Publications</a></li>
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                                  <li><a href="#common" uk-scroll>Common Parameters</a></li>
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                        <p>Openaire XML Schema has been changed! Please <a href="https://www.openaire.eu/openaire-xml-schema-change-announcement" target="_blank">click here</a> to learn more!</p>
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                  <p>
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                    The OpenAIRE HTTP API allows developers to access the metadata information space of OpenAIRE by performing queries over publications, datasets, and projects.
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                    The API is intended for metadata discovery and exploration only, that is it does not give direct access to publication files and it does not provide access to
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                    the whole information space: the number of total results returned by one query is limited to 10,000. For accessing the whole information space, developers are
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                    encouraged to use the <a href="http://api.openaire.eu/#cha_oai_pmh" target="_blank">OAI-PMH</a>.<br>
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                  </p>
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                    <div>
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                        <h4>TERMS OF USE AND SLA</h4>
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                        <p><strong>OpenAIRE HTTP API</strong>: the APIs are free-to-use (no sign-up needed) by any third-party service. Note that:</p>
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                        <ul>
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                            <li>The HTTP API limits each query to 10,000 paged results; for unlimited access to the APIs please contact <a href="mailto:paolo.manghi@isti.cnr.it">the service administrators</a>.
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                            </li>
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                            <li>Since 2015 an <a href="https://zenodo.org/record/51077#.WsdCFdNubOR">RDF dump of the LOD is made available in Zenodo.org</a></li>
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                        </ul>
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                        <p><strong> Metadata license is CC-BY</strong>: the metadata records retuned by the service can be freely re-used by commercial and non-commercial partners under CC-BY license, hence as long as OpenAIRE is acknowledged as content provider.
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                        </p>
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                        <p><strong>Quality of Service</strong>: all API services are running in production 24/7 within the OpenAIRE infrastructure premises deployed at the <a href="http://icm.edu.pl/en/centre-of-technology/">data center</a> facilities of the <a href=http://icm.edu.pl/en/">Interdisciplinary Centre for Mathematical and Computational Modelling</a> (ICM).
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                        </p>
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                        <p><strong>APIs rate limits</strong>
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                        <ul>
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                            <li>no more than 30 concurrent connections from single IP to any APIs</li>
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                            <li>no more than 67 concurrent requests in total</li>
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                            <li>no more then 37 concurrent request in total (max 30 per single IP) to the HTTP API for selective access</li>
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                            <li>no more than 15 requests/second to the HTTP API for selective access (in total, not per IP. If this limit is reached, requests will be delayed).</li>
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                        </ul>
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                        </p>
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                    </div>
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                    <h2 id="common">Common Parameters</h2>
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                    <p> Parameters included in this section can always be specified, regardless the type of <strong>entities</strong> (metadata about <strong>publications</strong>,
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                        <strong>datasets</strong>, or <strong>projects</strong>) you want to retrieve. <br>
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                        To query for publications metadata: <strong>http://api.openaire.eu/search/publications</strong> <br>
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                        To query for datasets metadata: <strong>http://api.openaire.eu/search/datasets</strong> <br>
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                        To query for projects metadata: <strong>http://api.openaire.eu/search/projects</strong> <br>
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                    </p>
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                    <table class="uk-table uk-table-striped uk-table-hover uk-table-small">
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                      <thead>
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                          <tr>
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                              <th>Parameter</th>
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                              <th>Option</th>
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                              <th>Description</th>
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                          </tr>
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                      </thead>
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                      <tbody>
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                          <tr>
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                              <td>page</td>
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                              <td>integer</td>
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                              <td>Page number of the search results.</td>
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                          </tr>
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                          <tr>
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                              <td>size</td>
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                              <td>integer</td>
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                              <td>Number of results per page.</td>
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                          </tr>
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                          <tr>
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                              <td>format</td>
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                              <td>json | xml | csv | tsv</td>
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                              <td>The format of the response. The default is xml.</td>
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                          </tr>
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                          <tr>
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                              <td>model</td>
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                              <td>openaire | sygma</td>
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                              <td>The data model of the response. Default is openaire. Model sygma is a simplified version of the openaire model. For sygma, only the xml format is available. The relative XML schema is available <a href="https://www.openaire.eu/schema/sygma/oaf_sygma_v2.1.xsd" target="_blank">here</a>.</td>
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                          </tr>
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                          <tr>
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                              <td>sortBy</td>
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                              <td><code>sortBy=field,[ascending|descending]</code></td>
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                              <td>The sorting order of the specified field. For the list of sortable fields, please refer to the documentation relative to the specific type of entity you are querying for.</td>
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                          </tr>
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                          <tr>
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                              <td>hasECFunding</td>
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                              <td>true | false</td>
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                              <td>If hasECFunding is true gets the entities funded by the EC. If hasECFunding is false gets the entities related to projects not funded by the EC.</td>
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                          </tr>
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                          <tr>
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                              <td>hasWTFunding</td>
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                              <td>true | false</td>
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                              <td>If hasWTFunding is true gets the entities funded by Wellcome Trust. The results are the same as those obtained with <code>funder=wt</code>. If hasWTFunding is false gets the entities related to projects not funded by Wellcome Trust.</td>
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                          </tr>
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                          <tr>
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                              <td>funder</td>
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                              <td>WT | EC | ARC | ANDS | NSF | FCT | NHMRC</td>
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                              <td>Search for entities by funder.</td>
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                          </tr>
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                          <tr>
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                              <td>fundingStream</td>
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                              <td>...</td>
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                              <td>Search for entities by funding stream.</td>
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                          </tr>
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                          <tr>
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                              <td>FP7scientificArea</td>
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                              <td>...</td>
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                              <td>Search for FP7 entities by scientific area.</td>
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                          </tr>
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                          <tr>
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                              <td>keywords</td>
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                              <td>White-space separated list of keywords.</td>
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                              <td>N/A</td>
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                          </tr>
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                      </tbody>
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                  </table>
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                  <h2 id="pubs">Publication specific parameters</h2>
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                  <p>Endpoint: <strong>http://api.openaire.eu/search/publications</strong></p>
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                  <table class="uk-table uk-table-striped uk-table-hover uk-table-small uk-table-justify">
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                    <thead>
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                        <tr>
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                            <th>Parameter</th>
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                            <th>Option</th>
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                            <th>Description</th>
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                        </tr>
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                    </thead>
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                    <tbody>
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                        <tr>
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                            <td>sortBy</td>
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                            <td><code>sortBy=field,[ascending|descending]</code>; <strong>'field'</strong> is one of: <code>dateofcollection</code>, <code>resultstoragedate</code>, <code>resultstoragedate</code>, <code>resultembargoenddate</code>, <code>resultembargoendyear</code>, <code>resultdateofacceptance</code>, <code>resultacceptanceyear</code></td>
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                            <td>The sorting order of the specified field.</td>
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                        </tr>
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                        <tr>
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                            <td>doi</td>
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                            <td>Comma separated list of DOIs. <br>
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                                Alternatevely, it is possible to repeat the paramater for each requested doi.
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                            </td>
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                            <td>Gets the publications with the given DOIs, if any.</td>
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                        </tr>
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                        <tr>
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                            <td>openairePublicationID</td>
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                            <td>Comma separated list of OpenAIRE identifiers. <br>
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                                Alternatevely, it is possible to repeat the paramater for each requested identifier.
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                            </td>
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                            <td>Gets the publication with the given openaire identifier, if any.</td>
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                        </tr>
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                        <tr>
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                            <td>fromDateAccepted</td>
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                            <td>Date formatted as <code>YYYY-MM-DD</code></td>
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                            <td>Gets the publications whose date of acceptance is greater than or equal the given date.</td>
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                        </tr>
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                        <tr>
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                            <td>toDateAccepted</td>
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                            <td>Date formatted as <code>YYYY-MM-DD</code></td>
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                            <td>Gets the publications whose date of acceptance is less than or equal the given date.</td>
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                        </tr>
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                        <tr>
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                            <td>title</td>
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                            <td>White-space separated list of keywords.</td>
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                            <td>Gets the publications whose titles contain the given list of keywords.</td>
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                        </tr>
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                        <tr>
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                            <td>author</td>
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                            <td>White-space separated list of names and/or surnames.</td>
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                            <td>Search for publications by authors.</td>
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                        </tr>
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                        <tr>
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                            <td>openaireProviderID</td>
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                            <td>Comma separated list of identifiers.</td>
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                            <td>Search for publications by openaire data provider identifier. <br>
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                                Alternatevely, it is possible to repeat the parameter for each provider id. In both cases, provider identifiers will form a query with OR semantics.</td>
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                        </tr>
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                        <tr>
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                            <td>openaireProjectID</td>
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                            <td>Comma separated list of identifiers. <br>
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                                Alternatevely, it is possible to repeat the paramater for each provider id. In both cases, provider identifiers will form a query with OR semantics.</td>
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                            <td>Search for publications by openaire project identifier. Alternatevely, it is possible to repeat the parameter for each provider id. In both cases, provider identifiers will form a query with OR semantics.</td>
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                        </tr>
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                        <tr>
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                            <td>hasProject</td>
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                            <td>true | false</td>
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                            <td>If hasProject is true gets the publications that have a link to a project. If hasProject is false gets the publications with no links to projects.</td>
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                        </tr>
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                        <tr>
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                            <td>projectID</td>
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                            <td>...</td>
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                            <td>The given grant identifier of the project.</td>
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                        </tr>
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                        <tr>
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                            <td>FP7ProjectID</td>
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                            <td>...</td>
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                            <td>Search for publications associated to a FP7 project with the given grant number. It is equivalent to a query by <code>funder=FP7&projectID=grantID</code></td>
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                        </tr>
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                        <tr>
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                            <td>OA</td>
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                            <td>true | false</td>
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                            <td>If OA is true gets Open Access publications. If OA is false gets the non Open Access publications</td>
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                        </tr>
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                    </tbody>
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                </table>
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                <h2 id="datasets">Dataset specific parameters</h2>
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                <p>Endpoint: <strong>http://api.openaire.eu/search/datasets</strong></p>
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                <table class="uk-table uk-table-striped uk-table-hover uk-table-small uk-table-justify">
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                  <thead>
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                      <tr>
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                          <th>Parameter</th>
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                          <th>Option</th>
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                          <th>Description</th>
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                      </tr>
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                  </thead>
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                  <tbody>
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                      <tr>
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                          <td>sortBy</td>
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                          <td><code>sortBy=field,[ascending|descending]</code>; <strong>'field'</strong> is one of: <code>dateofcollection</code>, <code>resultstoragedate</code>, <code>resultstoragedate</code>, <code>resultembargoenddate</code>, <code>resultembargoendyear</code>, <code>resultdateofacceptance</code>, <code>resultacceptanceyear</code></td>
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                          <td>The sorting order of the specified field.</td>
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                      </tr>
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                      <tr>
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                          <td>doi</td>
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                          <td>Comma separated list of DOIs. <br>
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                              Alternatevely, it is possible to repeat the paramater for each requested doi.
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                          </td>
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                          <td>Gets the publications with the given DOIs, if any.</td>
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                      </tr>
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                      <tr>
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                          <td>openaireDatasetID</td>
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                          <td>Comma separated list of OpenAIRE identifiers. <br>
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                              Alternatevely, it is possible to repeat the paramater for each requested identifier.</td>
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                          <td>Gets the publication with the given openaire identifier, if any.</td>
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                      </tr>
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                      <tr>
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                          <td>openaireDatasetID</td>
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                          <td>Comma separated list of openaire identifiers</td>
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                          <td>Gets the publication with the given openaire identifier, if any.</td>
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                      </tr>
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                      <tr>
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                          <td>fromDateAccepted</td>
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                          <td>Date formatted as <code>YYYY-MM-DD</code></td>
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                          <td>Gets the datasets whose date of acceptance is greater than or equal the given date.</td>
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                      </tr>
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                      <tr>
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                          <td>toDateAccepted</td>
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                          <td>Date formatted as <code>YYYY-MM-DD</code></td>
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                          <td>Gets the datasets whose date of acceptance is less than or equal the given date.</td>
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                      </tr>
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                      <tr>
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                          <td>title</td>
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                          <td>White-space separated list of keywords.</td>
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                          <td>Gets the datasets whose titles contain the given list of keywords.</td>
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                      </tr>
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                      <tr>
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                          <td>author</td>
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                          <td>A white-space separated list of names and/or surnames</td>
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                          <td>Search for datasets by authors.</td>
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                      </tr>
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                      <tr>
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                          <td>openaireProviderID</td>
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                          <td>Comma separated list of identifiers.</td>
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                          <td>Search for datasets by openaire data provider identifier. <br>
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                              Alternatevely, it is possible to repeat the parameter for each provider id. In both cases, provider identifiers will form a query with OR semantics.</td>
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                      </tr>
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                      <tr>
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                          <td>openaireProjectID</td>
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                          <td>Comma separated list of identifiers. </td>
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                          <td>Search for publications by openaire project identifier. <br>
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                              Alternatevely, it is possible to repeat the parameter for each provider id. In both cases, provider identifiers will form a query with OR semantics.</td>
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                      </tr>
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                      <tr>
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                          <td>hasProject</td>
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                          <td>true | false</td>
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                          <td>If hasProject is true gets the datasets that have a link to a project. If hasProject is false gets the datasets with no links to projects.</td>
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                      </tr>
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                      <tr>
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                          <td>FP7ProjectID</td>
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                          <td>...</td>
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                          <td>Search for datasets associated to a FP7 project with the given grant number. It is equivalent to a query by <code>funder=FP7&projectID=grantID</code></td>
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                      </tr>
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                      <tr>
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                          <td>OA</td>
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                          <td>true | false</td>
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                          <td>If OA is true gets Open Access datasets. If OA is false gets the non Open Access datasets</td>
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                      </tr>
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                  </tbody>
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              </table>
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              <h2 id="projects">Project specific parameters</h2>
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              <p>Endpoint: <strong>http://api.openaire.eu/search/projects</strong></p>
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              <table class="uk-table uk-table-striped uk-table-hover uk-table-small uk-table-justify">
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                <thead>
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                    <tr>
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                        <th>Parameter</th>
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                        <th>Option</th>
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                        <th>Description</th>
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                    </tr>
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                </thead>
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                <tbody>
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                    <tr>
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                        <td>sortBy</td>
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                        <td><code>sortBy=field,[ascending|descending]</code>; <strong>'field'</strong> is one of: <code>projectstartdate</code>, <code>projectstartyear</code>, <code>projectenddate</code>, <code>projectendyear</code>, <code> projectduration</code></td>
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                        <td>The sorting order of the specified field.</td>
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                    </tr>
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                    <tr>
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                        <td>grantID</td>
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                        <td>Comma separated list of DOIs.</td>
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                        <td>Gets the project with the given grant identifier, if any.</td>
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                    </tr>
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                    <tr>
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                        <td>openairePublicationID</td>
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                        <td>Comma separated list of OpenAIRE identifiers.</td>
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                        <td>Gets the publication with the given openaire identifier, if any.</td>
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                    </tr>
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                    <tr>
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                        <td>name</td>
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                        <td>White-space separated list of keywords.</td>
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                        <td>Gets the projects whose names contain the given list of keywords.</td>
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                    </tr>
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                    <tr>
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                        <td>acronym</td>
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                        <td>N/A</td>
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                        <td>Gets the project with the given acronym, if any.</td>
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                    </tr>
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                    <tr>
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                        <td>callID</td>
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                        <td>N/A</td>
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                        <td>Search for projects by call identifier.</td>
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                    </tr>
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                    <tr>
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                        <td>startYear</td>
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                        <td>Year formatted as <code>YYYY</code></td>
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                        <td>Gets the projects that started in the given year.</td>
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                    </tr>
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                    <tr>
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                        <td>endYear</td>
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                        <td>Year formatted as <code>YYYY</code>.</td>
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                        <td>Gets the projects that ended in the given year.</td>
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                    </tr>
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                    <tr>
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                        <td>participantCountries</td>
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                        <td>Comma separeted list of 2 letter country codes.</td>
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                        <td>Search for projects by participant countries.</td>
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                    </tr>
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                    <tr>
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                        <td>participantAcronyms</td>
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                        <td>White space separeted list of acronyms of institutions.</td>
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                        <td>Search for projects by participant institutions.</td>
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                    </tr>
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                </tbody>
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              </table>
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