Draganov B. Strong converse inequalities for the weighted multivariate Bernstein-Durrmeyer operator on the simplex via multipliers. Ann. Sofia Univ. Fac. Math. and Inf. [Internet]. 2018 Dec. 12 [cited 2024 Nov. 24];105:55-73. Available from: https://ftl5.uni-sofia.bg./index.php/fmi/article/view/12