P. Manoharan, and S. Subathra. “Non Markovian Retrial Queue, Balking, Disaster under Working Breakdown and Working Vacation”. Journal of Computational Analysis and Applications (JoCAAA) 31, no. 2 (April 6, 2023): 244–255. Accessed December 19, 2024. https://eudoxuspress.com/index.php/pub/article/view/78.