1. University of Groningen,Jan C. Wilems Center for Systems and Control, ENTEG, Faculty of Science and Engineering,AG Groningen,The Netherlands,9747
2. Université de Lyon,Laboratoire Ampere Dpt. EEA of the Ecole Centrale de Lyon,Ecully,France,69134
3. University of Pavia,Department of Electrical, Computer and Biomedical Engineering,Pavia,Italy,27100