Menon, R., Rajagopalan Vijayakumar, and Jitendra Pandey. “Selection of Optimal Air Independent Propulsion System Using Forced Decision Matrix”. Defence Science Journal 70, no. 1 (February 10, 2020): 103-109. Accessed April 2, 2020. https://publications.drdo.gov.in/ojs/index.php/dsj/article/view/13678.