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Robertson, S.E.: ¬The methodology of information retrieval experiment (1981)
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Robertson, S.E.: ¬The parametric description of retrieval tests : Part I: The basic parameters (1969)
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Robertson, S.E.: ¬The parametric description of retrieval tests : Part II: Overall measures (1969)
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Robertson, S.E.; Walker, S.; Beaulieu, M.: Experimentation as a way of life : Okapi at TREC (2000)
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