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Hancock-Beaulieu, M.: ¬Les catalogues en ligne juges par les utilisateurs (1991)
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Robertson, S.E.: Overview of the Okapi projects (1997)
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Robertson, S.E.; Walker, S.; Hancock-Beaulieu, M.M.: Large test collection experiments of an operational, interactive system : OKAPI at TREC (1995)
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Boss, R.W.: Client/server technology for libraries with a survey of vendor offerings (1994)
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Robertson, S.E.: OKAPI at TREC-1 (1994)
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