BORZYCKI, Krzysztof. Testing of highly doped and photonic crystal optical fibers. Journal of Telecommunications and Information Technology, Warsaw, Poland, v. 33, n. 3, p. 65–73, 2008. DOI: 10.26636/jtit.2008.3.889. Disponível em: https://www.jtit.pl/jtit/article/view/889. Acesso em: 2 aug. 2026.