An Estimate of the Difference Between a Diagonal Element and the Corresponding Eigenvalue of a Symmetric Tridiagonal Matrix. Journal of Computational Mathematics, [S. l.], v. 5, n. 2, p. 144–155, 1987. Disponível em: https://www.global-sci.com/index.php/JCM/article/view/10871. Acesso em: 5 dec. 2025.