Rezunenko, V. O. (2012). Potentials of a spherical segment and electrostatic charge in the presence a cone and sectional sphere. Visnyk of V. N. Karazin Kharkiv National University. Ser. Mathematics, Applied Mathematics and Mechanics, (1030), 25-37. https://doi.org/10.26565/2221-5646-2012-1030-03