PIKKALA, Vijaya Laxmi; KASSAHUN, Wondewosen. Discrete Time Analysis of Multi-Server Queueing System with Multiple Working Vacations and Reneging of Customers‎. International Journal of Mathematical Modelling & Computations, [S. l.], v. 9, n. 1, p. 1–15, 2019. Disponível em: http://oiccpress.com/ijm2c/article/view/11309. Acesso em: 9 may. 2026.