DYACHENKO, M.; SOLODOV, A. Some new approaches in the theory of trigonometric series with monotone coefficients. Eurasian Mathematical Journal, [S. l.], v. 16, n. 1, p. 22–31, 2025. Disponível em: https://emj.enu.kz/index.php/main/article/view/687. Acesso em: 1 aug. 2025.