List of Articles الگوریتم ژنتیک مرتبسازی نامغلوب Open Access Article Abstract Page Full-Text 1 - A Two-echelon Multi-objective Hybrid Model for Single-Vendor Multiple-Retailer Vendor Management Inventory Problem by using Two Pareto-based Multi-objective Meta-heuristic Algorithms Mostafa Hoseinnezhadi Alireza Irajpur