BratiichukN. S., and SliwinskaD. “Queueing Systems With Resume Level”. Ukrains’kyi Matematychnyi Zhurnal 66, no. 1 (January 25, 2014): 30–40. Accessed November 22, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/2108.