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Robertson, M.A.: Windows 3.0 for the online searcher (1991)
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Robertson, S.E.: Some recent theories and models in information retrieval (1980)
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Robertson, S.E.: Theories and models in information retrieval (1977)
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Robertson, S.E.: On term selection for query expansion (1990)
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Robertson, S.E.: On relevance weight estimation and query expansion (1986)
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Chen, C.; Paul, R.J.; O'Keefe, B.: Fitting the Jigsaw of citation : information visualization in domain analysis (2001)
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Pejtersen, A.M.: New model for multimedia interface to online public access catalogues (1992)
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