2024-03-29T07:34:13Zhttps://www.iris.sssup.it/oai/requestdidlhttp://standards.iso.org/ittf/PubliclyAvailableStandards/MPEG-21_schema_files/did/didl.xsd
urn:mpeg:mpeg21:2002:02-DIDL-NSorehttp://tweety.lanl.gov/public/schemas/2008-06/atom-tron.sch
http://www.w3.org/2005/Atomoai_dchttp://www.openarchives.org/OAI/2.0/oai_dc.xsd
http://www.openarchives.org/OAI/2.0/oai_dc/