Ed. La Découverte, Paris 1995. 432 pages
Editions de l'Aube, 2004, ISBN 2 75260040 2 380 pages 0 262 01 208 1, 553 pages
Volume V of the Santa Fé Institute Studies in the Sciences of Complexity, AddisonWesley Pub. Cy. N.Y. 1988. 317 p.