Open Science Research Excellence
S. B. Mansuri,  A Note on Negative Hypergeometric Distribution and Its Approximation.   journal   = {International Journal of Mathematical and Computational Sciences}, [online]. World Academy of Science, Engineering and Technology. November 2012, vol. 71(11). 1571 - 1573[viewed 25 August 2019]. Available from: http://waset.org/publications/7715.