@book{GroetschelLovaszSchrijver1993, author = {Gr{\"o}tschel, Martin and Lov{\´a}sz, L{\´a}szlo and Schrijver, Alexander}, title = {Geometric Algorithms and Combinatorial Optimization}, series = {Algorithms and Combinatorics}, volume = {2}, journal = {Algorithms and Combinatorics}, edition = {Second corrected edition}, publisher = {Springer}, isbn = {3-540-56740-2, 0-387-56740-2 (U.S.)}, year = {1993}, language = {en} } @book{GroetschelLovaszSchrijver1988, author = {Gr{\"o}tschel, Martin and Lov{\´a}sz, L{\´a}szlo and Schrijver, Alexander}, title = {Geometric Algorithms and Combinatorial Optimization}, series = {Algorithms and Combinatorics}, volume = {2}, journal = {Algorithms and Combinatorics}, publisher = {Springer}, isbn = {3-540-13624-X, 0-387-13624-X (U.S.)}, year = {1988}, language = {en} }