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Moen, E.M.J.C.; Boersma, K.T.: ¬The significance of concept mapping for education and curriculum development (1997)
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Kim, Y.W.; Kim, J.H.: ¬A model of knowledge based information retrieval with hierarchical concept graph (1990)
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Reinmann-Rothmeier, G.; Mandl, H.: Wissensmanagement im Unternehmen : Eine Herausforderung für die Repräsentation, Kommunikation und Nutzung von Wissen (2000)
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Köhler, J.; Philippi, S.; Specht, M.; Rüegg, A.: Ontology based text indexing and querying for the semantic web (2006)
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