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Humphrey, S.M.: Knowledge-based systems for indexing (1994)
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Humphrey, S.M.: Indexing biomedical documents : from thesaural to knowledge-based retrieval systems (1992)
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Schuegraf, E.J.; Bommel, M.F.van: ¬An automatic document indexing system based on cooperating expert systems : design and development (1993)
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Björklund, L.; Kristiansson, G.: Problems of knowledge organisation in an archival environment - KAM (1990)
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Roberts, D.; Souter, C.: ¬The automation of controlled vocabulary subject indexing of medical journal articles (2000)
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