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Lewis, D.D.; Sparck Jones, K.: Natural language processing for information retrieval (1996)
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Lewis, D.D.: ¬The TREC-4 filtering track (1996)
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- The Fourth Text Retrieval Conference (TREC-4). Ed.: K. Harman
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Lewis, D.D.; Sparck Jones, K.: Natural language processing for information retrieval (1997)
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