Yakubu, Othman Musa, Yusuf Abbakar Mohammed, and Akeyede Imam. “A Mixture of Gamma-Gamma, Loglogistic-Gamma Distributions for the Analysis of Heterogenous Survival Data”. International Journal of Mathematical Research 11, no. 1 (February 15, 2022): 1–9. Accessed May 1, 2024. http://archive.conscientiabeam.com/index.php/24/article/view/2924.