Liu, Jun; Pearson, John W. Parameter-robust preconditioning for the optimal control of the wave equation. (English) Zbl 07171737 Numer. Algorithms 83, No. 3, 1171-1203 (2020). MSC: 65-XX PDFBibTeX XMLCite \textit{J. Liu} and \textit{J. W. Pearson}, Numer. Algorithms 83, No. 3, 1171--1203 (2020; Zbl 07171737) Full Text: DOI Link
Li, Buyang; Liu, Jun; Xiao, Mingqing A fast and stable preconditioned iterative method for optimal control problem of wave equations. (English) Zbl 1327.49052 SIAM J. Sci. Comput. 37, No. 6, A2508-A2534 (2015). MSC: 49M25 49M05 49K20 35L05 65N06 65N12 65N22 65F08 65F10 PDFBibTeX XMLCite \textit{B. Li} et al., SIAM J. Sci. Comput. 37, No. 6, A2508--A2534 (2015; Zbl 1327.49052) Full Text: DOI