LESZCZUK, Mikołaj. Revising and Improving the ITU-T Recommendation P.912. Journal of Telecommunications and Information Technology, Warsaw, Poland, v. 59, n. 1, p. 10–14, 2015. DOI: 10.26636/jtit.2015.1.770. Disponível em: https://jtit.pl/jtit/article/view/770. Acesso em: 10 jun. 2026.