<hi xmlns="http://www.tei-c.org/ns/1.0" rend="bold">Hiebel, Gerald, Martin Doerr, Øyvind Eide, und Maria Theodoridou. </hi>“CRMgeo: a Spatiotemporal Model. An Extension of CIDOC-CRM to link the CIDOC CRM to GeoSPARQL through a Spatiotemporal Refinement.” Proposal for approval by CIDOC CRM-SIG. Version 1.2. September 2015. <ref xmlns="http://www.tei-c.org/ns/1.0" target="https://www.cidoc-crm.org/crmgeo/sites/default/files/CRMgeo1_2.pdf"> <hi rend="color(1155CC)">https://www.cidoc-crm.org/crmgeo/sites/default/files/CRMgeo1_2.pdf</hi> </ref> <hi xmlns="http://www.tei-c.org/ns/1.0" rend="Hyperlink"> <hi rend="color(1155CC)">.</hi> </hi>