@techreport{GroetschelMartinWeismantel1994, author = {Martin Gr{\"o}tschel and Alexander Martin and Robert Weismantel}, title = {The Steiner Tree Packing Problem in VLSI-Design.}, institution = {ZIB}, address = {Takustr. 7, 14195 Berlin}, number = {SC-94-02}, language = {eng}, year = {1994} }