MICHALSKI, Wojciech. Personal communication services in wireless networks. Journal of Telecommunications and Information Technology, [S. l.], v. 22, n. 4, p. 147–153, 2005. DOI: 10.26636/jtit.2005.4.333. Disponível em: https://jtit.pl/jtit/article/view/333. Acesso em: 18 may. 2026.