@techreport{HeinzStephanSchlechte2009, author = {Stefan Heinz and R{\"u}diger Stephan and Thomas Schlechte}, title = {Solving Steel Mill Slab Problems with Branch and Price}, institution = {ZIB}, address = {Takustr. 7, 14195 Berlin}, number = {09-14}, language = {eng}, year = {2009} }