BABENKO, V. F.; PICHUGOV, S. A. Approximation of continuous vector functions. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 46, n. 11, p. 1435–1448, 1994. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5583. Acesso em: 5 dec. 2025.