Akgün, Ramazan. “A Modulus of Smoothness for Some Banach Function Spaces”. Ukrains’kyi Matematychnyi Zhurnal 75, no. 8 (August 30, 2023): 1015 - 1031. Accessed November 21, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/970.