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Larsen, G.: Advances in OPACs in Europe : an overview (1994)
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Jurafsky, D.; Martin, J.H.: Speech and language processing : ani ntroduction to natural language processing, computational linguistics and speech recognition (2009)
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Rosemblat, G.; Resnick, M.P.; Auston, I.; Shin, D.; Sneiderman, C.; Fizsman, M.; Rindflesch, T.C.: Extending SemRep to the public health domain (2013)
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Lee, N.S.: InfoStation: a multimedia access system for library automation (1990)
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Kreymer, O.: ¬An evaluation of help mechanisms in natural language information retrieval systems (2002)
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