Jain, Madhu, Chandra Shekhar, and Shalini Shukla. 2014. “MARKOV MODEL FOR SWITCHING FAILURE OF WARM SPARES IN MACHINE REPAIR SYSTEM”. Journal of Reliability and Statistical Studies 7 (June):57-68. https://journals.riverpublishers.com/index.php/JRSS/article/view/21629.