SERDYUK, A. S. Approximation by interpolation trigonometric polynomials on classes of periodic analytic functions. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 64, n. 5, p. 698–712, 2012. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2609. Acesso em: 5 dec. 2025.