Cordeiro, Gauss, Mohamed Mead, Ahmed Z. Afify, Adriano Suzuki, and Amarat Abd El-Gaied. “An Extended Burr XII Distribution: Properties, Inference and Applications”. Pakistan Journal of Statistics and Operation Research 13, no. 4 (December 1, 2017): 809-828. Accessed September 18, 2020. https://pjsor.com/pjsor/article/view/1965.