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Robertson, S.E.; Sparck Jones, K.: Relevance weighting of search terms (1976)
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Sparck Jones, K.; Walker, S.; Robertson, S.E.: ¬A probabilistic model of information retrieval : development and comparative experiments - part 1 (2000)
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Sparck Jones, K.; Walker, S.; Robertson, S.E.: ¬A probabilistic model of information retrieval : development and comparative experiments - part 2 (2000)
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Robertson, S.E.; Sparck Jones, K.: Simple, proven approaches to text retrieval (1997)
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