BORZYCKI, Krzysztof. Labeling of signals in optical networks and its applications. Journal of Telecommunications and Information Technology, Warsaw, Poland, v. 16, n. 2, p. 73–88, 2004. DOI: 10.26636/jtit.2004.2.237. Disponível em: https://www.jtit.pl/jtit/article/view/237. Acesso em: 15 jun. 2026.