By Tijssen Robert J. W.   in Research Evaluation

ISSN:1471-5449|21|3|204-215

Oxford University Press‎(2012)‎

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By Tijssen Robert J. W.   Van Leeuwen Thed N.   in Scientometrics

ISSN:0138-9130|66|1|55-69

Springer Publishing Company ‎(2006)‎

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