@inproceedings{BachemGroetschel1982, author = {Bachem, Achim and Gr{\"o}tschel, Martin}, title = {New aspects of polyhedral theory}, series = {Modern Applied Mathematics}, booktitle = {Modern Applied Mathematics}, editor = {Korte, Bernhard}, publisher = {North-Holland}, pages = {51 -- 106}, year = {1982}, language = {en} } @book{BachemButzGroetscheletal.1981, author = {Bachem, Achim and Butz, Lothar and Gr{\"o}tschel, Martin and (Bearb.), Rainer and Leitung), Bernhard}, title = {Input-Output-Analyse bei unternehmensgr{\"o}ßenspezifischen Fragestellungen}, publisher = {Institut f{\"u}r Mittelstandsforschung}, address = {Bonn}, year = {1981}, language = {en} } @article{BachemGroetschel1981, author = {Bachem, Achim and Gr{\"o}tschel, Martin}, title = {Homogenization of polyhedra}, series = {Methods of Operations Research}, volume = {40}, journal = {Methods of Operations Research}, pages = {215 -- 219}, year = {1981}, language = {en} } @inproceedings{BachemGroetschel1981, author = {Bachem, Achim and Gr{\"o}tschel, Martin}, title = {Characterizations of adjacency of faces of polyhedra}, series = {Mathematical Programming at Oberwolfach}, volume = {14}, booktitle = {Mathematical Programming at Oberwolfach}, editor = {K{\"o}nig, Heinz and Korte, Bernhard and Ritter, Klaus}, publisher = {North-Holland}, pages = {1 -- 22}, year = {1981}, language = {en} }