Калмыков, Андрей Викторович, and Александр Анатольевич Рева. “Management Features of the Development and Implementation of Information Systems of Telecommunication Industry”. Eastern-European Journal of Enterprise Technologies 6, no. 3(54) (February 20, 2012): 29–35. Accessed January 30, 2026. https://journals.uran.ua/eejet/article/view/2245.