ISHAK, A. Barriers to entry and exit in the mobile service sector in Algeria . Milev Journal of Research and Studies, [S. l.], v. 4, n. 1, p. 319–339, 2023. DOI: 10.58205/mjrs.v4i1.1225. Disponível em: https://jiamcs.centre-univ-mila.dz/index.php/mjrs/article/view/1225. Acesso em: 1 sep. 2024.