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PDE-constrained optimization with local control and boundary observations: Robust preconditioners." SIAM Journal on Scientific Computing 38, no. 6 (2016): A3461-A3491."
The Split Bregman Algorithm Applied to PDE-Constrained Optimization Problems With Total Variation Regularization." Computational Optimization and Applications 63 (2016): 1-26."
PDE-constrained optimization: Preconditioners and diffuse domain methods. Ås: Department of Mathematical Sciences and Technology Faculty of Environmental Science and Technology Norwegian University of Life Sciences, 2015.
PDE-Constrained Optimization Problems With Box Constraints In International Conference on Preconditioning Techniques for Scientific and Industrial Applications, Oxford., 2013.