فهرس المقالات Behzad Ghasemi المقاله 1 - Vehicle Routing Problem with a Time Window and Stochastic Demand and by Assuming a Competitor in Meeting the Customers' Demands Behzad Ghasemi Ebrahim Mohammadipirlar Amir Sadeghi پژوهشگر , العدد 5 , السنة 5 , بهار 2020