%% -*-BibTeX-*-


@InProceedings{Groetschel1982a,
  author       = "Martin Gr{\"o}tschel",
  editor       = "B. Korte",
  booktitle    = "Modern Applied Mathematics, Optimization and Operations Research, Lect. Summer Sch., Bonn 1979",
  title        = "Approaches to Hard Combinatorial Optimization Problems",
  publisher    = "North-Holland",
  pages        = "437--515",
  year         = "1982",
  classmath    = "*90C10 90-02 05-02 05C35 05C38 65K05 68Q25 05C30 05C45 90B10 90C35",
  language     = "English",
}