Motornaya, O. V. and Motornyi, V. P. (2008) “Comparison theorems for some nonsymmetric classes of functions”, Ukrains’kyi Matematychnyi Zhurnal, 60(7), pp. 969–975. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/3212 (Accessed: 20April2024).