NitiemaP. K. (1998) “On the best $L_1$-approximation of truncated powers by algebraic polynomials”, Ukrains’kyi Matematychnyi Zhurnal, 50(4), pp. 593-598. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/4930 (Accessed: 24November2024).