1. Workgroup for Infrastructure Policy, Technische Universität Berlin, Berlin, Germany
2. Chair of Political Science, Universität Passau, Passau, Germany
3. Center for Sustainable Energy Systems (ZNES), Europa-Universität Flensburg, Flensburg, Germany
4. Grupo de Investigación en Ciencias Económicas (GACE), Universidad del Magdalena, Santa Marta, Colombia