Orley Ashenfelter
University of Princeton
Jan Bentzen
University of Aarhus
Françoise Bourdon
University of Bourgogne   
Maurizio Ciaschini
University of Macerata
Pierre Combris
Institut National de la Recherche Agronomique France
Silvia Gatti
University of Bologna 

Eric Giraud-Héraud
Institut National de la Recherche Agronomique France 
Danièle Meulders
Free University of Brussels
Marie-Claude Pichery
University of Bourgogne
Robert Plasman
Free University of Brussels
Henri J. Serbat
Fedeco Paris