T. Islam, S. Rahman, and N. Nahar, “Factors Affecting Customer Satisfaction in 3G Service”, ASRJETS-Journal, vol. 14, no. 3, pp. 202–217, Dec. 2015, Accessed: Oct. 05, 2025. [Online]. Available: https://asrjetsjournal.org/American_Scientific_Journal/article/view/1186