BezkrylaS. I., NesterenkoA. N., and Chaikovs’kyiA. V. “On the Third Moduli of Continuity”. Ukrains’kyi Matematychnyi Zhurnal 66, no. 10 (October 25, 2014): 1420-1424. Accessed November 22, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/2233.