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Moed, H.F.; Leeuwen, T.N. van; Reedijk, J.: ¬A new classification system to describe the ageing of scientific journals and their impact factors (1998)
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- Journal of documentation. 54(1998) no.4, S.387-419
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Reedijk, J.; Moed, H.F.: Is the impact of journal impact factors decreasing? (2008)
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- Journal of documentation. 64(2008) no.2, S.183-192