Горб, М. С., and О. В. Гусєва. “Own Waves in a Transversely Inhomogeneous Open Cylindrical Dielectric Waveguide”. Visnyk NTUU KPI Seriia - Radiotekhnika Radioaparatobuduvannia, no. 46, Oct. 2011, pp. 13-21, doi:10.20535/RADAP.2011.46.13-21.