1. Department of Politics and Public Administration, University of Konstanz, Universitätsstraße 10, 78457 Konstanz, Germany.
2. Department of Political Science, University of Santiago de Compostela, Campus Vida, 15705 Compostela, Spain.
3. International Conflict Research, ETH Zurich, Haldeneggsteig 4, 8092 Zurich, Switzerland.
4. Computer Engineering and Networks Laboratory, ETH Zurich, Gloriastraße 35, 8092 Zurich, Switzerland.
5. Foundation for Research and Technology Hellas, Nikolaou Plastira 100, 71110 Heraklion, Crete, Greece.
6. Department of Computer Science, University of Crete, Voutes Campus, 70013 Heraklion, Crete, Greece.