Volchkov, V. V. and Savost’yanova, I. M. (2015) “Smoothing of the Singularities of Functions Whose Integrals over the Balls on a Sphere are Zero”, Ukrains’kyi Matematychnyi Zhurnal, 67(2), pp. 272-278. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/1979 (Accessed: 25April2024).