Improved Relaxed Positive-Definite and Skew-Hermitian Splitting Preconditioners for Saddle Point Problems. Journal of Computational Mathematics, [S. l.], v. 37, n. 1, p. 95–111, 2018. DOI: 10.4208/jcm.1710-m2017-0065. Disponível em: https://www.global-sci.com/index.php/JCM/article/view/12353. Acesso em: 5 dec. 2025.