Mirzaeva , Malika B. “Mathematical Modeling and Simulation of Multi-Stage Service Systems With Feedback, Group Service, and Prioritization ”. Andalasian International Journal of Agriculture and Natural Sciences (AIJANS) 6, no. 2 (September 26, 2025): 45–51. Accessed November 4, 2026. https://aijans.lppm.unand.ac.id/index.php/aijans/article/view/93.