[1]
H. A. Dzyubenko, “Almost coconvex approximation of continuous periodic functions”, Ukr. Mat. Zhurn., vol. 71, no. 3, pp. 353–367, Mar. 2019, Accessed: Apr. 23, 2025. [Online]. Available: https://umj.imath.kiev.ua/index.php/umj/article/view/1444