@techreport{WeiserGaenzlerSchiela2004, author = {Martin Weiser and Tobias G{\"a}nzler and Anton Schiela}, title = {A Control Reduced Primal Interior Point Method for PDE Constrained Optimization}, institution = {ZIB}, address = {Takustr. 7, 14195 Berlin}, number = {04-38}, language = {eng}, year = {2004} }