@book{OPUS4-3090, title = {Handbook of Combinatorics, Volume II}, editor = {Ronald Graham and Martin Gr{\"o}tschel and L{\´a}szlo Lov{\´a}sz}, isbn = {0-444-82351-4 (Volume 2) (Elsevier); 0-262-07171-1 (Volume 2) (MIT); 0-444-88002-X (Set of vols 1 and 2) (ELsevier); 0-262-07169-X (Sets of vols 1 and 2) (MIT)}, year = {1995}, }