List of Articles Zohreh Kian Mehr Article 1 - Designing a Positioning Model for State Banks' Services and its Validation from the Perspective of External Customers 20.1001.1.23222301.2021.7.4.7.8 10.30495/jsm.2021.1942925.1543 Zohreh Kian Mehr Hossein Hakimpour Mahdi Mahmoodzadeh Vashan Mohammad Mohammadi Journal of System Management , Issue 5 , Year , Autumn 2021