German Institute for Economic Research (DIW Berlin), Berlin, DE

University of Michigan, Ann Arbor, US // University of Duisburg-Essen, Essen, DE // The Australian National University, Canberra, AU // Colorado School of Mines (CSM), Colorado, US // The London School of Economics and Political Science (LSE), London, UK // Université Paris-Dauphine, Paris, FR // University of Oxford, Oxford, UK // University of Virginia, Charlottesville, US // Zurich University of Applied Sciences, Winterthur, CH // Resources for the Future, Washington, D.C., US