Denis Claude Laboratoire d'Economie et Gestion (LEG)   Laboratoire d'Economie et Gestion (LEG) 2 boulevard Gabriel – BP 26611 Dijon Cedex, 21000 France   denis_claude_economics@yahoo.fr   http://www.researchgate.net/profile/Denis_Claude/   Biographical Sketch: Denis Claude is Assistant Professor of Economics at the University of Burgundy. He is a member of the Laboratoire d'Economie et Gestion (LEG: UMR 5118 Université de Bourgogne & CNRS). He has carried out several postdoctoral research stays in different prestigious institutions such as the CNRS - Centre d'Economie de la Sorbonne and the Group for Research in Decision Analysis (GERAD) at HEC Montreal. Denis Claude's field of specialisation is environmental economics. He completed his Ph.D. in Economics at the University of Montpellier I in December 2001.       JEL Areas: H : Public Economics Q5 : Environmental Economics: General