First Author:   Pradyot Ranjan Jena Institute of Environmental Economics and World Trade jena@iuw.uni-hannover.de   Königsworther Platz 1 Hannover, 30167, Germany       Second Author: Ulrike Grote Institute of Environmental Economics and World Trade grote@iuw.uni-hannover.de   Königsworther Platz 1 Hannover, 30167, Germany