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author_ss:"Worthen, D.B."
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theme_ss:"Citation indexing"
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theme_ss:"Retrievalstudien"
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year_i:[1980 TO 1990}
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Pao, M.L.; Worthen, D.B.: Retrieval effectiveness by semantic and citation searching (1989)
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1.0 = *:*, product of: 1.0 = boost 1.0 = queryNorm