On Stable Perturbations of the Stiffly Weighted Pseudoinverse and Weighted Least Squares Problem. Journal of Computational Mathematics, [S. l.], v. 23, n. 5, p. 527–536, 2005. Disponível em: https://gsp.tricubic.dev/JCM/article/view/11730. Acesso em: 15 mar. 2026.