Abulebda, Mohammed, Ashok Kumar Pathak, Arvind Pandey, and Shikhar Tyagi. “On a Bivariate XGamma Distribution Derived from Copula”. Statistica 82, no. 1 (January 1, 2022): 15–40. Accessed September 29, 2022. https://rivista-statistica.unibo.it/article/view/12293.