Affiliation: | 1. GRÉDI - Département d''économique - Université de Sherbrooke, Canada;2. LAMETA - Université de Montpellier, France;1. Department of Agribusiness and Agricultural Economics, University of Manitoba, 377-66 Dafoe Road, Winnipeg, Manitoba, Canada R3T 2N2;2. Department of Geography, University of Guelph, 50 Stone Road East, Guelph, Ontario, Canada N1G 2W1;1. Abt Associates, Inc., Cambridge, MA 02138, USA;2. George Perkins Marsh Institute and Department of Economics, Clark University, 950 Main St., Worcester, MA 01610, USA;1. Department of Mathematical Sciences, Ulsan National Institute of Science and Technology, Ulsan, Republic of Korea;2. Department of Mathematics, University of Toronto, ON M5S 2E4, Canada;3. Korea Institute for Advanced Study, Seoul, Republic of Korea |