11 Garfield E. Citation Indexing: Its theory and application in science, technology, and humantities． Wiley, New York, 1979
22 Braun T. et al. Scientometric indicators, A 32-country comparative evaluation of publishing performance and citation impact. World Scientific Publ. Co., Singapore. 1985
33 May R. M. The scientific wealth of nations. Science, 1997, 275:793～796
47 Egghe L., Rousseau R. Introduction to informetrics, Elsevier Amsterdam, 1990
