Ed. INRA-SAD, Paris, 1993. 334 p.
Cybernetics and Human Knowing Journal, Vol. 9, N° 2, 2001. 96 pages
Ed. INRA Publications, Versailles, 1990. 366 p.
Revue Economie Rurale, (SFER), Paris 1990
Springer Series in Synergetics, Springer Verlag, 1994.