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Robertson, S.E.: Some recent theories and models in information retrieval (1980)
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Robertson, S.E.; Thompson, C.L.: ¬An operational evaluation of weighting, ranking and relevance feedback via a front-end system (1987)
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Robertson, S.E.: On relevance weight estimation and query expansion (1986)
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Robertson, S.E.: ¬The methodology of information retrieval experiment (1981)
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Bovey, J.D.; Robertson, S.E.: ¬An algorithm for weighted searching on a Boolean system (1984)
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