TRACZYK, Wiesław. Preface. Journal of Telecommunications and Information Technology, [S. l.], v. 13, n. 3, 2003. DOI: 10.26636/jtit.2003.3.197. Disponível em: https://jtit.pl/jtit/article/view/197. Acesso em: 29 jan. 2026.