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Benkowsky, J.; Bühring, B.; Georgy, U.; Linde, F.: Information pricing : the development of a product- and pricing concept for the research centre of the Public Library Cologne (2005)
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Zorbas, E.; Whitcomb, L.: ¬The EPIC experience : an assessment of OCLC's new online system after its first year (1991)
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Hulser, R.P.: Overview of graphical user interfaces (1992)
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Barnett, G.A.; Fink, E.L.: Impact of the internet and scholar age distribution on academic citation age (2008)
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Helfer, D.: Rethinking reference and research (1998)
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