NOVIKOV, S. I. An analog of the rolle theorem for differential operators and $L$-spline interpolation. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 45, n. 8, p. 1122–1128, 1993. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/5909. Acesso em: 11 apr. 2025.