فهرس المقالات bi-objective location-routing problem حرية الوصول المقاله صفحة الملخص نص كامل 1 - The Bi-Objective Location-Routing Problem based on Simultaneous Pickup and Delivery with Soft Time Window Elham Jelodari Mamaghani Mostafa Setak 10.22094/joie.2017.279