Hartley J. To cite or not to cite: author self-citations and the impact factor. Scientometrics online pub. 23 Dec.2011
Author self-citations contribute to the overall citation count of an article and are an important factor in determining the impact factor of a journal. As there are usually more citations in the text than in the reference list, the author suggests to first count the number of references in the text to gain a better measure of how many citations are in the article. A discrimination should be also done between different kinds of author self-citations – from those that are informative to those that are self-enhancing.