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Haas, S.W.: Natural language processing : toward large-scale, robust systems (1996)
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Stuart, S.J.; Powell, T.; Humphreys, B.L.: ¬The Unified Medical Language System (UMLS) project (2002)
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Weeber, M.; Klein, H.; Jong-van den Berg, L.T.W. de; Vos, R.: Using concepts in literature-based discovery : simulating Swanson's Raynaud-Fish Oil and Migraine-Manesium discoveries (2001)
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