1. V. S. Voitsenya, Fiz. Plasmy,15, No. 1, 12 (1989).
2. M. M. Larionov, L. S. Levin, Yu. V. Petrov, et al., Plasma Phys. Controlled Fusion,30, No. 12, 1637 (1988).
3. Yu. F. Baranov, V. V. Dijachenko, M. M. Larionov, et al., Proc. of the 15th Europ. Conf. on Controlled Fusion, Dubrovnik (1988), p. 908.