Gajendra Kumar Saraswat, Vijay Kumar. “Momentary and Immovable State Conduct of Heterotypical Queues With Three Types of Ingress Sources Administered by A Third Order Stochastic Matrix”. Mathematical Statistician and Engineering Applications 71, no. 4 (September 19, 2022): 3055–3072. Accessed April 29, 2024. https://www.philstat.org/index.php/MSEA/article/view/864.