MICHALSKI, Wojciech. Testing of interworking between network terminals with FSK receivers and public exchanges providing display and related services. Journal of Telecommunications and Information Technology, [S. l.], v. 16, n. 2, p. 66–72, 2004. DOI: 10.26636/jtit.2004.2.238. Disponível em: https://jtit.pl/jtit/article/view/238. Acesso em: 20 apr. 2026.