ARTAMONOV, S.; RUNOVSKI, K.; SCHMEISSER, H.-J. Methods of Trigonometric Approximation and Generalized Smoothness. II. Eurasian Mathematical Journal, [S. l.], v. 13, n. 4, p. 18–43, 2022. Disponível em: https://emj.enu.kz/index.php/main/article/view/269. Acesso em: 5 oct. 2024.