FORSTER, B. On the relation between fourier and leont’ev coefficients with respect to smirnov spaces. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 56, n. 4, p. 517–526, 2004. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/3773. Acesso em: 5 dec. 2025.