1. Institute of Control Systems, Hamburg University of Technology, Hamburg, Germany
2. Department of Electrical and Electronic Engineering, Department of Aeronautics, Imperial College London, London, U.K.
3. BASF Antwerpen, Antwerpen, Belgium
4. TU Dortmund University, Dortmund, Germany
5. Ruhr-Universität Bochum, Bochum, Germany
6. Department of Electrical and Electronic Engineering, University of Manchester, Manchester, U.K