ЛЕВАНДОВСЬКИЙ, В. Method for engineering of refraction index profile of circular crosssection waveguide. Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia, [S. l.], n. 39, p. 98-103, 2009. DOI: 10.20535/RADAP.2009.39.98-103. Disponível em: https://radap.kpi.ua/radiotechnique/article/view/258. Acesso em: 3 may. 2024.