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Havener, W.M.: Answering ready reference questions : print versus online (1990)
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Dickstein, R.; Greenfield, L.; Rosen, J.: Using the World Wide Web at the reference desk (1997)
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Richardson, J.V.: Question master : an evaluation of a Web-based decision-support system for use in reference environments (1998)
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Frické, M.; Fallis, D.: Indicators of accuracy for answers to ready reference questions an the Internet (2004)
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Cloughley, K.: Digital reference services : how do the library-based services compare with the expert services? (2004)
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