@article{MeyerPruefertTroeltzsch2007, author = {Meyer, Christian and Pr{\"u}fert, Uwe and Tr{\"o}ltzsch, Fredi}, title = {On two numerical methods for state-constrained elliptic control problems}, series = {Optimization Methods and Software}, volume = {22}, journal = {Optimization Methods and Software}, number = {6}, pages = {871 -- 899}, year = {2007}, language = {en} }