1. Network Dynamics, Max Planck Institute for Dynamics and Self-Organization (MPIDS), 37077 Göttingen, Germany
2. Chair for Network Dynamics, Institute for Theoretical Physics and Center for Advancing Electronics Dresden (cfaed), Technical University of Dresden, 01069 Dresden, Germany
3. Department of Physics, Technical University Darmstadt, 64289 Darmstadt, Germany
4. Forschungszentrum Jülich, Institute for Energy and Climate Research - Systems Analysis and Technology Evaluation (IEK-STE), 52425 Jülich, Germany
5. Institute for Theoretical Physics, University of Cologne, 50937 Köln, Germany