1. Proc. 13th Int. Conf. on Plasma Physics and Controlled Nuclear Fusion Research;Seki,1990
2. Proc. 13th Int. Conf. on Plasma Physics and Controlled Nuclear Fusion Research;Conn,1990
3. Proc. 14th Int. Conf. on Plasma Physics and Controlled Nuclear Fusion Research;Ishida,1992
4. Proc. 15th Int. Conf. on Plasma Physics and Controlled Nuclear Fusion Research;Kamada,1994
5. Proc. 14th Int. Conf. on Plasma Physics and Controlled Nuclear Fusion Research;Mauel,1992