BabenkoV. F., KofanovV. A., and PichugovS. A. “Kolmogorov-Type Inequalities for Periodic Functions Whose First Derivatives Have Bounded Variation”. Ukrains’kyi Matematychnyi Zhurnal 54, no. 5 (May 25, 2002): 603-609. Accessed November 24, 2024. https://umj.imath.kiev.ua/index.php/umj/article/view/4098.