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Park, I.: ¬A comparative study of major OPACs in selected academic libraries for developing countries : user study and subjective user evaluation (1997)
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Troutman, L.: ¬The online public access catalog and music materials : issues for system and interface design (1992)
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Lombardo, S.V.; Condic, K.S.: Empowering users with a new online catalog (2000)
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OPACs: an overview (1993)
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Brown, J.M.: ¬The multifile OPAC environment : a manageable approach to developing an instruction program (1993)
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