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, Warsaw, Poland, 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: 15 jun. 2026.