فهرس المقالات Samuel Yousefi المقاله 1 - Identification and Management of the Main Challenges in Saffron Industry in Iran Samuel Yousefi Jamileh Hayati Sargiz Yousefi پژوهشگر , العدد 2 , السنة 2 , بهار 2017 المقاله 2 - A multi-objective model for closed-loop supply chain optimization and efficient supplier selection in a competitive environment considering quantity discount policy Mustafa Jahangoshai Rezaee Samuel Yousefi Jamileh Hayati Journal of Industrial Engineering International , العدد 2 , السنة 13 , بهار 2017
