1. Max-Planck-Institut für Plasmaphysik, D–85748 Garching, Germany
2. CCFE, Culham Science Centre, Abingdon OX14 3DB, United Kingdom
3. Istituto di Fisica del Plasma, CNR/ENEA, Milano, Italy
4. Consorzio RFX-CNR/ENEA, I-35127 Padova, Italy
5. General Atomics, PO Box 85608, San Diego, California 92186-5608, USA
6. Max-Planck Institut für Plasmaphysik, Greifswald, Germany