et INRIA-Projet Codes

ISBN 10: 2-287-23939-1 Springer Berlin Heidelberg New York

ISBN 13:

Printed in France
Springer-Verlag France is a member of the group Springer Science + Business Media

First edition in French Springer-Verlag France 2004
ISBN: 2-287-20297-8

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The use of registered names, trademarks, etc, in this publication does not imply, even in the absence of a specific statement, that such names are exempt from the relevant laws and regulations and therefore free for general use ?

SPIN:11361145

Cover design: Jean-Fran ois MONTMARCH

To my wife Laurence, to my son Pierre, to my parents, to Fred Cohen, to Mark Allen Ludwig