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Machovec, G.S.: Electronic journal market overview in 1997 : part 2 - the aggregators (1997)
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Brand, A.: CrossRef turns one (2001)
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Weiner, S.T.: Electronic journals, four part series : an introduction (1997)
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Mountifield, H.M.: Electronic current awareness service : a survival tool for the information age? (1995)
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Hawkins, D.T.: Growth trends in the electronic information services market (1994)
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