Open Citation Project	ACM Digital Libraries, June 2000, San Antonio, TX, USA	A joint NSF - JISC International Digital Libraries Project
Index  of  presentation	Tools for reference linking Distributed Link Service (Southampton U.): displays links in documents in multiple formats from wherever served ResearchIndex, was Citeseer (NEC): ISI-like resource discovery, data collection and indexing of Web documents SFX (U. Ghent, Ex-Libris): link management in a host library environment SLinkS (Openly Informatics, Inc.): intermediary service calculates the URL of a cited document from bibliographic information
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