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McCray, A.T.; Nelson, S.J.: ¬The representation of meaning in the UMLS (1995)
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Cazan, C.: Medizinische Ontologien : das Ende des MeSH (2006)
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Andrade, J. de; Lopes Ginez de Lara, M.: Interoperability and mapping between knowledge organization systems : metathesaurus - Unified Medical Language System of the National Library of Medicine (2016)
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