“On the Convergence of the Nonnested V-Cycle Multigrid Method for Nonsymmetric and Indefinite Second-Order Elliptic Problems” (2006) Journal of Computational Mathematics, 24(2), pp. 157–168. Available at: https://www.global-sci.com/index.php/JCM/article/view/11753 (Accessed: 5 December 2025).