Saw, Hemant Kumar, and H. L. Manker. “Reliability Modeling of a System With One Main Unit and Two Associate Units Along With Sub-Unit”. Communications in Mathematics and Applications 13, no. 1 (May 23, 2022): 281–293. Accessed June 16, 2025. http://www.journals.rgnpublications.com/index.php/cma/article/view/1686.