“Performance Evaluation of a GI M (a, B) 1 Queueing Model for a Diagnostic Laboratory With Multiple Working Vacations and Equipment Breakdown”. Vascular and Endovascular Review 8, no. 10s (November 18, 2025): 267–273. Accessed August 28, 2026. https://verjournal.com/index.php/ver/article/view/820.