@article{GroetschelKrumkeRambauetal.2002, author = {Gr{\"o}tschel, Martin and Krumke, Sven and Rambau, J{\"o}rg and Torres, Luis Miguel}, title = {Making the Yellow Angels Fly}, series = {SIAM News}, volume = {35}, journal = {SIAM News}, number = {4}, pages = {1,10,11}, year = {2002}, language = {en} }