éditions Payot, Lausanne, 1998, ISBN 2-601-03227-8. 251 pages.
Editions de l'Aube, 84240, La Tour d'Aigues, 2002 ISBN 2 876 678 804 7, 320 pages
Editions Economica, Paris, 1992, 263 pages
Volume V of the Santa Fé Institute Studies in the Sciences of Complexity, AddisonWesley Pub. Cy. N.Y. 1988. 317 p.