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Cooper, M.D.; Chen, H.-M.: Predicting the relevance of a library catalog search (2001)
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Naderi, H.; Rumpler, B.: PERCIRS: a system to combine personalized and collaborative information retrieval (2010)
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Larsen, B.; Ingwersen, P.; Lund, B.: Data fusion according to the principle of polyrepresentation (2009)
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