G. Ayyappan, and S.Shyamala. “Transient Solution of an \(M^{[X]} / G / 1\) Queuing Model With Feedback, Random Breakdowns and Bernoulli Schedule Server Vacation Having General Vacation Time Distribution”. Malaya Journal of Matematik, vol. 1, no. 02, Apr. 2013, pp. 68-76, doi:10.26637/mjm102/009.