KofanovV. A. (2004) “On the set of extremal functions in certain Kolmogorov-type inequalities”, Ukrains’kyi Matematychnyi Zhurnal, 56(8), pp. 1062–1075. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/3822 (Accessed: 22November2024).