Akhdar, M. A., & Alsileeni, A. A. (2022). Analysis of M/M/1/N Queueing System with Encouraged Arrivals, Feedback, Catastrophe and Retention of Reneged Customers Roman. مجلة البحوث الأكاديمية, 22, 1–12. استرجع في من https://lam-journal.ly/index.php/jar/article/view/458