Nesterenko, O. N., I. L. Petrova, and A. V. Chaikovs’kyi. “On a Property of Moduli of Smoothness With Jacobi Weights”. Ukrains’kyi Matematychnyi Zhurnal 74, no. 4 (May 23, 2022): 534 - 541. Accessed April 17, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/7034.