JAROSZEWICZ, Szymon. Cross-selling models for telecommunication services. Journal of Telecommunications and Information Technology, [S. l.], v. 33, n. 3, p. 52–59, 2008. DOI: 10.26636/jtit.2008.3.887. Disponível em: https://jtit.pl/jtit/article/view/887. Acesso em: 5 dec. 2024.