TIMAN, M. F. On the best approximations of functions defined on zero-dimensional groups. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 64, n. 5, p. 719–728, 2012. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2611. Acesso em: 11 apr. 2025.