Dzуadуk V. К. On a new method for approximation of functions. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 18, n. 1, p. 36–47, 1966. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/8651. Acesso em: 6 dec. 2025.