A.-K. A. Al-Aloosy and R. A. E. Hallaji, “Performability Estimation of Token Ring Network”, NUCEJ, vol. 11, no. 1, pp. 98–106, Mar. 2008, Accessed: Mar. 19, 2026. [Online]. Available: http://oldjournal.eng.nahrainuniv.edu.iq/index.php/main/article/view/501