HNATYUK, Yu. V. The best uniform approximation in the metric space of continuous maps with compact convex images. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 62, n. 12, p. 1620–1633, 2010. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2987. Acesso em: 5 dec. 2025.