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Horner, J.; Michaud-Oystryk, N.: ¬The efficiency and success rates of print ready references vs online redy reference searches in Canadian University Libraries (1995)
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Singh, D.K.; Singh, B.K.; Dubey, Y.P.: Expert systems and their application in library and information systems (1996)
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Radford, M.L.: Encountering virtual users : a qualitative investigation of interpersonal communication in chat reference (2006)
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