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Tenopir, C.: Full-text retrieval : systems and files (1994)
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Sparck Jones, K.: Revisiting classification for retrieval (2005)
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Ewers, A.: ¬A review of new developments in text retrieval systems (1994)
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Latham, S.J.: Beyond Boolean logic : probabilistic approaches to text retrieval (1991)
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Schmidt, J.: Full-text searching : as seen from a non-bibliographic searcher's point of view (1989)
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