8D Price. Science Since Babylon[ M]. Yale University Press,1961.
9H Kretschmer. Coauthorship networks of invisible colleges and institutionalized communities [ J ]. SCIENTOMETRICS, 1994, 30(1) :363 -369.
10H Kretschmer. Types of two-dimensional and three-dimensional collaboration patterns [ A ]. C A Macias-Chapula.Proceedings of the Seventh Conference of the International Society for Scientometrics and Informetrics [ C ]. MexicoColima, 1999. 244-257.
