1. D. Price,Little Science, Big Science. New York, Columbia University Press, 1963, pp. 87–89.
2. B. Stefaniak, Individual and multiple authorship of papers in chemistry and physics,Scientometrics, 4 (1982) 331–337.
3. B. S. Maheswarappa, A. Vinutha, Collaborative research in genetics,International Library Review, 21 (1989) No. 2, 173–176.
4. M. Yitzhaki, D. Ben-Tamar, Multiple authorship in biochemistry and other fields; A case study of the Journal of Biological Chemistry throughout 1905–1988, In:Informetrics 89/90,L. Egghe,R. Rousseau (Eds) Amsterdam, New York, Elsevier, 1990, pp. 373–389.
5. I. Ajiferuke, A probabilistic model for the distribution of authorship,Journal of the American Society for Information Science, 42 (1991) No. 4, 279–289.