1. An ego-centric citation analysis of the works of Michael O. Rabin based on multiple citation indexes;Bar-Ilan;Information Processing and Management,2006
2. Bauer, K., & Bakkalbasi, N. (2005). An examination of citation counts in a new scholarly communication environment. D-Lib Magazine, 11 (9). http://www.dlib.org/dlib/september05/bauer/09bauer.html.
3. Burright, M. (2006). Google Scholar: science & technology. Issues in Science & Technology Librarianship, 45. http://www.istl.org/06-winter/databases2.html.
4. Population geography;Findlay;Progress in Human Geography,1991
5. Population geography;Findlay;Progress in Human Geography,1992