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Rindflesch, T.C.; Aronson, A.R.: Semantic processing in information retrieval (1993)
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Wright, L.W.; Nardini, H.K.G.; Aronson, A.R.; Rindflesch, T.C.: Hierarchical concept indexing of full-text documents in the Unified Medical Language System Information sources Map (1999)
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Hodgson, J.P.E.: Knowledge representation and language in AI (1991)
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