Гордевский, В. Д., and О. С. Сазонова. “Continual Distribution With Screw Modes”. Visnyk of V. N. Karazin Kharkiv National University. Ser. Mathematics, Applied Mathematics and Mechanics, Vol. 84, Dec. 2016, pp. 112-2, doi:10.26565/2221-5646-2016-84-08.