Éditions Delachaux et Niestlé, 2013, 272 pages – ISBN 978-2- 603-01843-9
Ed. Simon and Schuster , 2009, ISBN 13 978 0 7432 9405 8 , 310 pages
Volume V of the Santa Fé Institute Studies in the Sciences of Complexity, AddisonWesley Pub. Cy. N.Y. 1988. 317 p.