فهرس المقالات anwar Yousefi المقاله 1 - Presenting a Gray Marketing Model Using the Role of Influencers in Social Media 20.1001.1.23222301.2021.7.3.4.3 10.30495/jsm.2021.1942794.1542 Anvar Yousefi Mehdi Hadad Zadeh Journal of System Management , العدد 4 , السنة 7 , تابستان 2021
