Menq, Jau Yeu, and Sheng Lin Chang. “Modelling the Heterogeneous Markov Attrition Process ”. Defence Science Journal 43, no. 1 (January 1, 2013): 79–78. Accessed June 17, 2025. https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/4219.