1. Institute of Control Systems, Karlsruhe Institute of Technology (KIT), Karlsruhe, Germany
2. Faculty of Mechanical Engineering, Electrical and Energy Systems, Brandenburg University of Technology, Cottbus, Germany
3. Department of Electrical, Computer and Biomedical Engineering, University of Pavia, Pavia, Italy
4. Jan C. Willems Center for Systems and Control, Engineering and Technology Institute Groningen (ENTEG), Faculty of Science and Engineering, University of Groningen, Groningen, The Netherlands