KORNEICHUK, N. P. On the optimal reconstruction of the values of operators. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 46, n. 10, p. 1375–1381, 1994. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5616. Acesso em: 6 dec. 2025.