John W. Pearson, Andrew J. Wathen. A new approximation of the Schur complement in preconditioners for PDE-constrained optimization. Numerical Lin. Alg. with Applic., 19(5):816-829, 2012. [doi]
@article{PearsonW12,
title = {A new approximation of the Schur complement in preconditioners for PDE-constrained optimization},
author = {John W. Pearson and Andrew J. Wathen},
year = {2012},
doi = {10.1002/nla.814},
url = {http://dx.doi.org/10.1002/nla.814},
researchr = {https://researchr.org/publication/PearsonW12},
cites = {0},
citedby = {0},
journal = {Numerical Lin. Alg. with Applic.},
volume = {19},
number = {5},
pages = {816-829},
}