4Web of Science [EB/OL]. http://access.isiproduets.com/sales/, 2008-03-14.
5H Small. Co-citatlon in the scientific literature: A new measure of the relationship between two documents [J]. Journal of the American society for information science, 1973, (24): 265-269.
6Marshakova I V. Citation networks in infomlation science [J]. Scientometrics, 1981,3 (1): 13-25.
7Narin F,Moll,J K.Bibliometrics[J].Annual Review of Information Science and Technology,1977,12:35-58.
8Seglen P O.The Use of Citation Analysis and other Bibliometric Methods in Evaluating Research Quality[J].Tidsakrifl for den Norske Lacgeforening,1989,109(31):3229-3234.
9Luukkonen T.Bibliometricsand Evaluation of Research Performance[J].Annals of Medicine,1990,22 (3):145-150.