Cheng Wang & Pengtao Sun. (2021). An Augmented Lagrangian Uzawa Iterative Method for Solving Double Saddle-Point Systems with Semidefinite (2,2) Block and Its Application to DLM/FD Method for Elliptic Interface Problems.
Communications in Computational Physics. 30 (1).
124-143.
doi:10.4208/cicp.OA-2020-0084