FRICKE, M.; VISSER, J. A TELECOMMUNICATIONS DEVELOPMENT FRAMEWORK FOR TELECOMMUNICATIONS OPERATORS IN THE SADC. The South African Journal of Industrial Engineering, [S. l.], v. 16, n. 1, 2011. DOI: 10.7166/16-1-175. Disponível em: http://sajie.journals.ac.za/pub/article/view/175. Acesso em: 11 apr. 2025.