Guerch, Abdelkader, and Asma Achi. “Measuring the Impact of Customer Expectations On the ‎experience of Their Relationship in the Field of Customer Service ‎Subscribers to Third-Generation (3G++) -Case Study of Mobilis‏ ‏operator’s Customers”. Dirassat Journal Economic Issue 7, no. 1 (January 1, 2016): 127-165. Accessed November 22, 2024. http://journals.lagh-univ.dz/index.php/djei/article/view/280.