@article{DMDICO_2007_27_1_a1,
     author = {Cegielski, Andrzej and Grossmann, Christian},
     title = {Properties of projection and penalty methods for discretized elliptic control problems},
     journal = {Discussiones Mathematicae. Differential Inclusions, Control and Optimization},
     pages = {23--41},
     publisher = {mathdoc},
     volume = {27},
     number = {1},
     year = {2007},
     zbl = {1283.49030},
     language = {en},
     url = {http://geodesic.mathdoc.fr/item/DMDICO_2007_27_1_a1/}
}