V. L. Grona, “Localization of the Bochner-Riesz means in the Nikol’skii classes”, Ukr. Mat. Zhurn., vol. 45, no. 10, pp. 1331–1344, Oct. 1993, Accessed: Dec. 05, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/5938