فهرس المقالات flexible informational systems حرية الوصول المقاله صفحة الملخص نص كامل 1 - Investigating the Effect of Functional and Flexible Information Systems on Supply Chain Operation: Iran Automotive Industry Abbas Zareian Iraj Mahdavi Hamed Fazlollahtabar 10.7508/jist.2017.19.005