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<referencetext xmlns="http://eprints.org/ep2/data/2.0">Lotka, A. J. 1926. Statistics - the frequency distribution of scientific productivity. Journal of the Washington Academy of Science, 16: 317- 25.

Gupta, D. K. 1987. Lotka's law and productivity pattern of entomological research in Nigeria for the period 1900-1973. Scientometrics, 1291 no.2: 33-46.

Gupta, D. K. 1992. Scientometric study of exploration geophysics – author productivity trends. Annals of Library Science and Documentation, 39 no.4: 145-52.

Kalyane, V. L. and B.K. Sen. 1995. A bibliometric study of the Journal of Oilseeds Research. Annals of Library Science and Documentation, 42 no.4: 121-41.

De Oliveira, S. M., et al. 1983. Aplicacao da lei de, produktividade deautores de Lotka a literatura da jaca, Review Biblioteconom Brasil, 11 no.10: 125-30.

De Oliviera, S. M. 1984, A lei de Lotka sobre a productividade autres; applicalidade do quadrado inverso. Review Escola Biblioteconom UFMG, 13 no. 2: 207-33.

Gupta, D. K. 1989. Lotka's law and its application to author productivity distribution in psychological literature of Africa for the period 1966-1975. Herald of Library Science, 28 no. 1-2: 11-21.

Sen, B. K. 1996. Contribution of Asian LIS journals towards the development of LIS profession in Asia during the past decade as viewed through the bibliometric lens. In: Congress of South-east Asian Librarians, 10th, 1996. Kuala Lumpur: CONSAL X, Vol.1: 195-220.</referencetext>
