9Campanario JM, Molina A. Surviving bad times: The role of citations, self-citations and numbers of citable items in recovery of the journal impact factor after at least four years of continuous decreases. Scientometrics, 2009, 81 ( 3 ) :859 - 864.
10Andrade A, Gonzalez-Jonte R, Campanario JM. Journals that increase their impact factor at least fourfold in a few years; The role of journal self-citations. Scientometrics, 2009, 80 (2) :515 - 528.