@techreport{KaibelPeinhardtPfetsch2006, author = {Volker Kaibel and Matthias Peinhardt and Marc Pfetsch}, title = {Orbitopal Fixing}, institution = {ZIB}, address = {Takustr. 7, 14195 Berlin}, number = {06-48}, language = {eng}, year = {2006} }