Le Temps Editeur, 2011, ISBN 978 2 36312 004 5 , 188 pages
Ed. Cujas - Paris, 1992, 135 pages.
Stanford University - ANMALIBRI, Saratoga, Cal. 95071 - USA ; et CREA, Ecole Polytechnique, Paris, vol. 15. 1-2.1991.
Volume V of the Santa Fé Institute Studies in the Sciences of Complexity, AddisonWesley Pub. Cy. N.Y. 1988. 317 p.