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author_ss:"Robertson, S.E."
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year_i:[1990 TO 2000}
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theme_ss:"Retrievalalgorithmen"
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theme_ss:"Retrievalstudien"
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Robertson, S.E.; Sparck Jones, K.: Simple, proven approaches to text retrieval (1997)
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1.0 = *:*, product of: 1.0 = boost 1.0 = queryNorm