NERUKH, Aleksander G.; MARCINIAK, Marian. The possible mechanism for a frequency shift by a time-varying of medium features. Journal of Telecommunications and Information Technology, [S. l.], v. 1, n. 1-2, p. 46–51, 2000. DOI: 10.26636/jtit.2000.1-2.14. Disponível em: https://jtit.pl/jtit/article/view/14. Acesso em: 5 jun. 2026.