S. ZEB; M. YOUSAF. Numerical Solution of Symmetric Saddle Point Problems by Updating Procedure using QR Householder Factorization. Sindh University Research Journal - SURJ (Science Series), [S. l.], v. 48, n. 3, 2016. Disponível em: https://sujo.usindh.edu.pk/index.php/SURJ/article/view/5009. Acesso em: 27 jun. 2026.