1. Center for Europe and Eurasia Research (CREE), National Institute for Oriental Languages and Civilizations (INALCO/Sorbonne Paris Cité), Paris, France
2. Institute for European, Russian, and Eurasian Studies, Elliott School of International Affairs, George Washington University, Washington, DC, USA
3. Haute École Pédagogique de Fribourg, Fribourg, Switzerland
4. Institute of Geography, University of Neuchâtel, Neuchâtel, Switzerland