UPPER ESTIMATES OF THE APPROXIMATION RATE OF COMBINATIONS OF ITERATES OF THE BERNSTEIN OPERATOR. Annual of Sofia University St. Kliment Ohridski. Faculty of Mathematics and Informatics, [S. l.], v. 101, p. 95–104, 2013. Disponível em: https://annual.uni-sofia.bg/index.php/fmi/article/view/232. Acesso em: 15 dec. 2025.