Plonis, D., V. Malisauskas, and A. Katkevicius. “Investigation of Anisotropic Cylindrical Semiconductor-Dielectric Waveguides”. Elektronika Ir Elektrotechnika, vol. 21, no. 5, Oct. 2015, pp. 48-53, doi:10.5755/j01.eee.21.5.13327.