GarfieldE.The history and meaning of the journal impact factor. JAMA2006; 295: 90–3.
2.
VakilN.The journal impact factor: Judging a book by its cover. Am J Gastroenterol2005; 100: 2436–7.
3.
LinardiP.M., CoelhoP.M.Z., CostaH.M.A.The “impact factor” as a criterion for the quality of scientific production is a relative, not absolute, measure. Braz J Med Biol Res1996; 29: 555–61.