[1]
V. V. Volchkov and I. M. Savost’yanova, “Analog of the John theorem for weighted spherical means on a sphere”, Ukr. Mat. Zhurn., vol. 65, no. 5, pp. 611–619, May 2013, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/2445