2026-04-05T13:26:13Zhttps://opendata.uni-halle.de/oai/driverdidlhttp://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-21_schema_files/did/didl.xsd urn:mpeg:mpeg21:2002:02-DIDL-NSoai_dchttp://www.openarchives.org/OAI/2.0/oai_dc.xsdhttp://www.openarchives.org/OAI/2.0/oai_dc/