Shanthi. R, and Lakshmipriya. G. “Batch Arrival Queue With Dual-Stage Service With an Additional Service and Multi-Phase Bernoulli Governed Vacations under N-Policy”. Utilitas Mathematica 122, no. 1 (July 12, 2025): 1922–1944. Accessed May 7, 2026. https://utilitasmathematica.com/index.php/Index/article/view/2443.