1. Science Citation Index, Split File Description, manuscript, Institute for Scientific Information, Philadelphia, 1988.
2. J. ANDERSON, P. M. D. COLLINS, J. IRVINE, P. A. ISARD, B. R. MARTIN, F. NARIN, K. STEVENS;Science and Public Policy, 15 (1988) 153.
3. F. NARIN, Evaluative Bibliometrics: The Use of Publication and Citation Analysis in the Evaluation of Scientific Activity, NSF-C627 report, NTIS, Springfield, 1976.
4. T. BRAUN, W. GLÄNZEL, A. SCHUBERT,Scientometric Indicators, World Publishing Co., Singapore-Philadelphia, 1985.