Hamdy Gomaa Abdel Aziz, Wael Hassan Nabil Mohamed (2021) “Sustaining the Quality of Telecommunication Services by Using Geographic Information Systems (GIS) (A Field Study on Telecom Egypt-WE)”, Design Engineering, pp. 519-546. Available at: http://www.thedesignengineering.com/index.php/DE/article/view/1563 (Accessed: 2May2024).