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Ekmekcioglu, F.C.; Robertson, A.M.; Willett, P.: Effectiveness of query expansion in ranked-output document retrieval systems (1992) 0.00

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Source: Journal of information science. 18(1992) no.2, S.139-147

Robertson, A.M.; Willett, P.: Applications of n-grams in textual information systems (1998) 0.00

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Source: Journal of documentation. 54(1998) no.1, S.48-69

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