First Author:   Steffen Kallbekken CICERO Center for International Climate and Environmental Research - Oslo steffen.kallbekken@cicero.uio.no   P.O. Box 1129 Blindern Oslo, 0318, Norway   +4722858758(Phone) +4722858758(Fax) http://www.cicero.uio.no/employees/homepage.aspx?lang=EN&person_id=590 Second Author: Stephan Kroll Department of Agricultural and Resource Economics, Colorado State University stephan.kroll@colostate.edu   Colorado State University, Colorado State University Fort Collins, 80523-1172, USA       http://dare.colostate.edu/skroll/ Third Author: Todd L Cherry Department of Economics, Appalachian State University cherrytl@appstate.edu   Department of Economics, Appalachian State University Boone, 28608-2051       http://www.business.appstate.edu/economics/faculty/cherrytl.htm