"Simulation and Economic Analysis for Separating Propylene and Propane Based on Distillation Column" (2025) Hadhramout University Journal of Natural & Applied Sciences, 21(2). موجود في: https://hu.edu.ye/hu-publications/journals/index.php/hujnas/article/view/663 (تاريخ الوصول: 24 يوليو 2026).