1. V.A Belyakov, V.A. Divavin, N.Ya. Dvorkin, et al., Ioffe Inst. Preprint 1629(1994).
2. V.E Golant, et al., in Controlled Fusion and Plasma Physics (Proc.23rd Eur. Conf. Kiev, 1996), a071, European Physical Society, Geneva.
3. V.K Gusev, V.I Nikolaev, K.A Podushnikova, et al., IEEE/NPSS 16th Symposium Fusion Technology, Vol. 2, pp. 1460–1463(1996).