فهرس المقالات سهراب دل انگیزان المقاله 1 - Business Environment: Designing and Explaining the New Environmental Hostility Model in Small and Medium Enterprises 20.1001.1.23222301.2020.6.3.1.3 10.30495/jsm.2021.678893 Bijan Rezaei Sohrab Delangizan Atieh Khodaei Journal of System Management , العدد 5 , السنة 6 , تابستان 2020