http://www.soros.org/openaccess/ Lagoze, Carl; Van de Sompel, Herbert. “The making of the Open Archives Initiative Protocol for Metadata Harvesting”. En: Library hi tech, 2003, v. 21, n. 2, pp. 118-128. Harnard, Stevan. “The self-archiving initiative freeing the refereed research literature online”. En: Nature, 2001, April, n. 410, pp. 1.024-1.025. http://www.ecs.soton.ac.uk/%7Eharnad/Tp/nature4.htm http://netec.wustl.edu/~subirats/Beijing/Protocol.htm http://software.eprints.org http://archives.eprints.org/