1. 1) L. A. Artsimovich: Proc. 3rd Inter. Conf. on Plasma Phys. and Controlled Nucl. Fusion Research (IAEA), Novosibrisk, (1968), Vol. 1, p. 17.
2. 2) N. J. Peacock: Nature, 224 (1969), 488.
3. 3) N. J. Oren and R. J. Taylor: Nucl. Fusion, 17 (1977), 1143.
4. 4) Y. Sakamoto: Proc. 9th Int. Vac. Congress, Madrid, (1983), p. 716.
5. 5) F. Waelbroeck: KFA Julich Rept., Jul-1592 (1980).