KHIZHA , A. L. Stability estimates of certain methods of approximation by local splines. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 40, n. 2, p. 263–267, 1988. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/9131. Acesso em: 6 dec. 2025.