SCHMEISSER, H.-J.; RUNOVSKI, K. On convergence of families of linear polynomial operators generated by matrices of multipliers. Eurasian Mathematical Journal, [S. l.], v. 1, n. 3, 2010. Disponível em: https://emj.enu.kz/index.php/main/article/view/55. Acesso em: 9 oct. 2025.