Record number of journals banned for boosting impact factor with self-citations : Nature
►http://blogs.nature.com/news/2012/06/record-number-of-journals-banned-for-boosting-impact-factor-with-self-
l’auto-#citation pour tricher sur le facteur d’impact a ses limites
To put all this in context, the 2011 ranking includes more than 10,500 journals, so the removed offenders make up fewer than 0.5% of the total. Still, Thomson Reuters could have kicked out more journals. Its own statistics indicate that 140 journals have had self-citations making up more than 70% of total citations in the past two years. By comparison, four-fifths of journals keep this proportion below 30%.