Kalyanaraman, Rathinasabapathy, and Shanthi R. “AN M G 1 QUEUE WITH REGULAR AND OPTIONAL PHASE VACATION AND WITH STATE DEPENDENT ARRIVAL RATE”. International Journal of Mathematical Modelling & Computations 5, no. 3 (March 21, 2015): 231–244. Accessed July 24, 2026. https://oiccpress.com/ijm2c/article/view/11253.