Golumbic, Martin Charles. Tolerance graphs / by Martin Charles Golumbic and Ann N. Trenk - Cambridge : Cambridge University Press , 2004. - xii,265p. : ills.,tables ; 22cm. - Cambridge studies in advanced mathematics ; 89 . Includes bibliographical references and index. ISBN: 9780521827584 GBP79.99 Subjects--Topical Terms: GRAPH THEORY Dewey Class. No.: 511.5 / GOL/T