Rezunenko, V. A. “Diffraction of the Field of Vertical Electric Dipole on the Spiral Conductive Sphere in the Presence of a Cone”. Visnyk of V. N. Karazin Kharkiv National University. Ser. Mathematics, Applied Mathematics and Mechanics, Vol. 88, Dec. 2018, pp. 17-26, doi:10.26565/2221-5646-2018-88-02.