Ed. Afcet-Dunod. RIS Vol. 6, n° 4, 1992. pp. 289-461...
Ed. Hermés, revue d'Intelligence artificielle Vol 16, N° 4-5 , 2002, 220 pages
Volume V of the Santa Fé Institute Studies in the Sciences of Complexity, AddisonWesley Pub. Cy. N.Y. 1988. 317 p.