Garín-Muñoz, Teresa, Covadonga Gijón, Teodosio Pérez-Amaral, and Rafael López. “Customer Satisfaction of Mobile-Internet-Users: An Empirical Approximation for the Case of Spain”. Journal of Reviews on Global Economics 2 (December 12, 2013): 442–454. Accessed May 4, 2024. https://www.lifescienceglobal.com/pms/index.php/jrge/article/view/1547.