2026-08-30T19:11:19Z https://pure.rug.nl/ws/oai oai_cerif_openaire https://www.openaire.eu/schema/cris/1.2/openaire-cerif-profile.xsd https://www.openaire.eu/cerif-profile/1.2/ qdc http://www.openarchives.org/OAI/2.0/oai_dc.xsd http://www.openarchives.org/OAI/2.0/oai_dc/ oai_dc http://www.openarchives.org/OAI/2.0/oai_dc.xsd http://www.openarchives.org/OAI/2.0/oai_dc/ nl_didl http://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-21_schema_files/did/didl.xsd urn:mpeg:mpeg21:2002:02-DIDL-NS mods http://www.loc.gov/mods/v3/mods-3-8.xsd http://www.loc.gov/mods/v3 xmetadiss http://files.dnb.de/standards/xmetadiss/xmetadiss.xsd http://www.d-nb.de/standards/xmetadissplus/