Handbook of Combinatorics 
Subtitle: Volume I
Contributors: Ronald L. Graham (Editor); Martin Grotschel (Editor); Laszlo Lovasz (Editor)
Publisher: North Holland
Published: December 1, 1995
Language: eng
Number of pages: 1120
ISBN-13: 9780444823465
First sentence: A graph G consists of a nonempty set V(G) of elements, called vertices or nodes, and a set E(G) of elements called edges, together with a relation of incidence that associates with each edge two vertices, called its ends.