CRISTOFOLI, F.; JUNIOR, A. C. L.; FEITERA, C. H. Benefits from the VOIP Use: a case study at GM. Review of Business Management, [S. l.], v. 8, n. 21, p. 55–69, 2007. DOI: 10.7819/rbgn.v8i21.61. Disponível em: https://rbgn.fecap.br/RBGN/article/view/61. Acesso em: 1 may. 2024.