2010-07-31T11:02:12Z http://oai.repec.openlib.org/oai.php amf http://amf.openlib.org/2001/amf.xsd http://amf.openlib.org/ oai_dc http://www.openarchives.org/OAI/2.0/oai_dc.xsd http://www.openarchives.org/OAI/2.0/oai_dc/