[1]
2018. Strong converse inequalities for the weighted multivariate Bernstein-Durrmeyer operator on the simplex via multipliers. Annual of Sofia University St. Kliment Ohridski. Faculty of Mathematics and Informatics. 105, (Dec. 2018), 55–73. DOI:https://doi.org/10.60063/gsu.fmi.105.55-73.