1. National Institute of Fusion Science, Graduate University for Advanced Studies, 322-6 Oroshi, Toki, Gifu 509-529, Japan
2. Associazione EURATOM-ENEA sulla fusione, Centro Ricerche di Frascati,C.P.65-00044, Italy
3. TRINITI, Troitsk, Moscow reg. 142190, Russia
4. Princeton Plasma Physics Laboratory, PO Box 451, Princeton, NJ 08543, USA
5. JAEA - International Fusion Research Centre, IFERC Obuchi, Aomori-ken, Japan
6. National Institute for Fusion, As EURATOM/CIEMAT, Av. Conplutense 22, 28040 Madrid, Spain