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Abstract: This paper challenges recent research Evans, 2008 reporting that theconcentration of cited scientific literature increases with the onlineavailability of articles and journals. Using Thomson Reuters- Web of Science,the present paper analyses changes in the concentration of citations receivedtwo- and five-year citation windows by papers published between 1900 and2005. Three measures of concentration are used: the percentage of papers thatreceived at least one citation cited papers; the percentage of papers neededto account for 20, 50 and 80 percent of the citations; and, theHerfindahl-Hirschman index. These measures are used for four broad disciplines:natural sciences and engineering, medical fields, social sciences, and thehumanities. All these measures converge and show that, contrary to what wasreported by Evans, the dispersion of citations is actually increasing.



Author: Vincent Lariviere, Yves Gingras, Eric Archambault

Source: https://arxiv.org/







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