“BERNOULLI’S VACATION OF M^x⁄(G⁄1) QUEUE WITH TWO-TIER SERVICE BASED VOLATILE SERVER”, TURCOMAT, vol. 12, no. 9, pp. 1358–1362, Apr. 2021, Accessed: May 27, 2026. [Online]. Available: https://turcomat.org/index.php/turkbilmat/article/view/3497