Evdonin, G. A., E. N. Popova, and E. I. Tagiltseva, “Modeling of System of Mass Service With Mutual Aid of Channels(on the Example of the Telecommunication Company)”, Статьи, Administrative Consulting, no. 1 (Jan. 2013), 109-14, https://administrative-consulting.owebs.ru/article/view/12312, accessed 8 Nov. 2026.