@article{HinzeSchiela2011, author = {Michael Hinze and Anton Schiela}, title = {Discretization of Interior Point Methods for State Constrained Elliptic Optimal Control Problems: optimal error estimates and parameter adjustment}, journal = {Comp. Opt. and Appl.}, volume = {48}, number = {3}, pages = {581 -- 600}, doi = {10.1007/s10589-009-9278-x}, year = {2011}, }