SNYMAN, J. H. Landlines, Cellular, and Internet Protocol Subscribership. Journal of Strategic Innovation and Sustainability, [S. l.], v. 16, n. 4, 2021. DOI: 10.33423/jsis.v16i4.4620. Disponível em: https://articlegateway.com/index.php/JSIS/article/view/4620. Acesso em: 6 apr. 2025.