PIMENTEL, Cecilio. Error statistics for concatenated systems on non-renewal time-varying channels. Journal of Telecommunications and Information Technology, [S. l.], v. 5, n. 3, p. 55–60, 2001. DOI: 10.26636/jtit.2001.3.67. Disponível em: https://jtit.pl/jtit/article/view/67. Acesso em: 8 oct. 2025.