RUNOVSKI, K.; SCHMEISSER, H.-J. Methods of trigonometric approximation and generalized smoothness. I. Eurasian Mathematical Journal, [S. l.], v. 2, n. 3, 2024. Disponível em: https://emj.enu.kz/index.php/main/article/view/94. Acesso em: 5 oct. 2024.