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Leydesdorff, L.; Zhou, P.; Bornmann, L.: How can journal impact factors be normalized across fields of science? : An assessment in terms of percentile ranks and fractional counts (2013)
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Huang, M.-H.; Lin, C.-S.; Chen, D.-Z.: Counting methods, country rank changes, and counting inflation in the assessment of national research productivity and impact (2011)
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Schreiber, M.: Fractionalized counting of publications for the g-Index (2009)
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Schreiber, M.: Empirical evidence for the relevance of fractional scoring in the calculation of percentile rank scores (2013)
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Kretschmer, H.; Rousseau, R.: Author inflation leads to a breakdown of Lotka's law : in and out of context (2001)
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