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author_ss:"Robertson, S.E."
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author_ss:"Walker, S."
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language_ss:"e"
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theme_ss:"Semantisches Umfeld in Indexierung u. Retrieval"
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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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