Ong, Seng-Huat, and Yeh Ching Low. “ON KEMPTON’S GENERALIZATION OF THE NEGATIVE BINOMIAL DISTRIBUTION”. Malaysian Journal of Science 38, no. 2 (August 28, 2019): 67–78. Accessed May 2, 2024. http://mjs.um.edu.my/index.php/MJS/article/view/18008.