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Gillenson, M.L.; Frost, R.D.; Kilpatrick, M.G.: Database pointers in navigational and object-oriented database management systems : a comparison (1995)
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French, J.C.; Brown, D.E.; Kim, N.-H.: ¬A classification approach to Boolean query reformulation (1997)
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Hancock-Beaulieu, M.: Query expansion : advances in research in online catalogues (1992)
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Interfaces to database systems (IDS94) : Proceedings of the Second International Workshop on Interfaces to Database Systems, Lancaster University, 13-15 July 1994 (1995)
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