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Bookstein, A.: Probability and Fuzzy-set applications to information retrieval (1985)
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Foster, W.; Wellings, R.: Development of BLCMP's online public access catalogue (1989)
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Hug, H.; Nöthiger, R.: ETHICS: an online public access catalogue at ETH-Bibliothek, Zürich (1988)
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Hill, J.S.: Online classification number access : some practical considerations (1984)
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Repo, A.J.: Economics and information (1987)
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