1.
Dzyubenko HA, Zalizko VD. Coconvex Approximation of Functions with More than One Inflection Point. Ukr. Mat. Zhurn. [Internet]. 2004Mar.25 [cited 2024Nov.22];56(3):352-65. Available from: https://umj.imath.kiev.ua/index.php/umj/article/view/3759