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Tenopir, C.: Online databases : overcoming the 'black box' syndrome (1994)
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O'Leary, M.: DIALOG Select : DIALOG for knowledge worker-on the Web (1997)
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Barker, A.L.: Non-Boolean searching on commercial online systems : optimising use of Dialog TARGET and ESA/IRS QUESTQUORUM (1995)
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Feldman, S.E.: Searching natural language systems : searchers know the engine (1994)
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Feldman, S.: Testing natural language : comparing DIALOG, TARGET, and DR-LINK (1996)
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