KUSHPEL , A. K.; KOVALCHUK , I. R. Estimate of the convergence rate of the interpolation polynomial derivative on the classes of differentiable functions. Ukrains’kyi Matematychnyi Zhurnal, [S. l.], v. 40, n. 2, p. 231–234, 1988. Disponível em: https://umj.imath.kiev.ua/index.php/umj/article/view/9122. Acesso em: 6 dec. 2025.