TRACZYK, Wiesław. Preface. Journal of Telecommunications and Information Technology, [S. l.], v. 21, n. 3, 2005. DOI: 10.26636/jtit.2005.3.332. Disponível em: https://jtit.pl/jtit/article/view/332. Acesso em: 25 mar. 2025.