Article (Larsen:2010:Scientometrics:20700371)
Larsen, P. O. & von Ins, M.
The rate of growth in scientific publication and the decline in coverage provided by Science Citation Index
Scientometrics, 2010, 84, 575-603


Article (small1973cocitation)
Small, H.
Co-citation in the scientific literature: A new measure of the relationship between two documents
Journal of the American Society for Information Science, Wiley Subscription Services, Inc., A Wiley Company, 1973, 24, 265-269