OAI-PMH (2004), The Open Archives Initiative Protocol for Metadata Harvesting, Protocol Version 2.0 of 2002-06-14, Document Version 2004/10/12: http://www.openarchives.org/OAI/openarchivesprotocol.html

OAI Dublin Core: http://www.openarchives.org/OAI/2.0/oai_dc.xsd

DCMI (2004), Dublin Core Metadata Element Set, Version 1.1: Reference Description: http://dublincore.org/documents/dces/

DCMI (2005), Dublin Core Metadata Terms : http://dublincore.org/documents/dcmi-terms/

The OpenURL Framework for Context-Sensitive Services: http://library.caltech.edu/openurl/StandardDocuments/Z39_88_Pt1_ballot%20final.pdf

OCLC (2003), ERRoLs for OAI Identifiers: http://www.oclc.org/research/projects/oairesolver/default.htm

Van de Sompel, H. and Beit-Aire, O., Open Linking in the Scholarly Information Environment Using the OpenURL Framework, D-Lib Magazine, vol. 7, n. 3, March 2001. URL: http://www.dlib.org/dlib/march01/vandesompel/03vandesompel.html

Simons, G. and Bird, S. The Open Language Archives Community: An infrastructure for distributed archiving of language resources Literary and Linguistic Computing 18, 2003, pp.117-128