KopotunK. A. and ListopadV. V. (1994) “On monotone and convex approximation by algebraic polynomials”, Ukrains’kyi Matematychnyi Zhurnal, 46(9), pp. 1266–1270. Available at: https://umj.imath.kiev.ua/index.php/umj/article/view/5644 (Accessed: 27July2024).