Affiliation: | 1. Department of Economics and Business, Universit?t Potsdam and German Institute for Economic Research, (DIW Berlin), Universit?t Potsdam, August-Bebel-Str. 89, 14482, Potsdam, Germany 2. Centro de Investigación y Docencia Económicas (CIDE) and German Institute for Economic Research (DIW Berlin). CIDE, Department of Economics, Carretera México-Toluca 3655 Col. Lomas de Santa Fe, 01210, México, D.F., México 3. Department of Energy, Transportation, Environment, DIW Berlin, Mohrenstra?e 58, 10117, Berlin, Germany 4. Forschungsstelle Nachhaltige Energie- und Wasserversorgung, Wirtschaftswissenschaftliche Fakult?t der Universit?t Basel, Peter Merian-Weg 6, CH-4002, Basel, Switzerland
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