BIR, J.B.R. Subarna. The Impact of Customer Retention Strategies in the Nepalese GSM Mobile Service Providers: A Case of Pokhara City. Economic Literature, [S. l.], v. 13, p. 46–54, 2018. DOI: 10.3126/el.v13i0.19150. Disponível em: https://nepjol.info./index.php/EL/article/view/19150. Acesso em: 27 apr. 2025.