Arora, Sanjeev Computational complexity : a modern approach / Sanjeev Arora, Boaz Barak - Cambridge, England Cambridge University Press, c2009 2009 - xxiii, 579 p. 25 cm. Bibliografía: p. 549-573 ISBN: 978-0-521-42426-4 Subjects--Topical Terms: COMPUTACION - MATEMATICAS Dewey Class. No.: 511.3/Ar67c