Motornaya, O. V. and Motornyi, V. P. (2019) “On the joint approximation of a function and its derivatives in the mean”, Ukrains’kyi Matematychnyi Zhurnal, 71(2), pp. 261-270. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/1436 (Accessed: 19April2024).