BABENKO, V. F.; GUN’KO, M. S.; RUDENKO, A. A. Optimal Recovery of n-Linear Functionals According to Linear Information. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 66, n. 7, p. 884–890, 2014. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/2186. Acesso em: 5 dec. 2025.