OAI metadata harvesting protocol v1.0, released on 21 January 2001, revised 24 April 2001 http://www.openarchives.org/OAI/openarchivesprotocol.htm Cite Base at the University of Southampton, a prototype Open Archives federating service which extracts and re-exports citation information in addition to providing a search facility, http://cite-base.ecs.soton.ac.uk/ Dublin Core Metadata Element Set, Version 1.1: Reference Description (2 July 1999), <http://purl.org/DC/documents/rec-dces-19990702.htm HTTP - Hypertext Transfer Protocol v1.1, http://www.ietf.org/rfc/rfc2616.txt XML - Extensible Markup Language, OAI uses XML schemas to specify responses, http://www.w3.org/XML/ Uniform Resource Identifiers (URI): Generic Syntax, http://www.ietf.org/rfc/rfc2396.txt NACA - National Advisory Committee for Aeronautics Technical Report Server, http://naca.larc.nasa.gov/ Arc Cross Archive Searching Service, an OAI service provider developed at Old Dominion University, http://arc.cs.odu.edu/help/archives.htm Open Archives Initiative, Tools for Implementers list, http://www.openarchives.org/tools/tools.htm