morad haseli, Heshmat, Haghighatmonfared, Jalal. “Model of Technological, Managerial and Marketing Infrastructure for Intelligent Technology Efficiency in Telecommunication Industry - Case Study: Telecommunication Infrastructure Company of Ilam Province1.” Journal of Information Systems and Telecommunication (JIST) , vol. 8, no. 30, 2020, pp. 105-112. 10.29252/jist.8.30.105