HILT, Attila. Microwave harmonic generation in fiber-optical links. Journal of Telecommunications and Information Technology, Warsaw, Poland, v. 7, n. 1, p. 22–28, 2002. DOI: 10.26636/jtit.2002.1.99. Disponível em: https://www.jtit.pl/jtit/article/view/99. Acesso em: 15 jun. 2026.