1. G.I. Dimov, V.V. Zakaidakov, and M.E. Kishinevskii: Sov. J. Plasma Phys. 2 (1976) 326.
2. T.K. Fower and B.G. Logan: Comments Plasma Phys. Control. Fusion 2 (1977) 167.
3. M. Inutake, K. Ishii, A. Itakura, et al.: in Proc. 9th Int. Conf. on Plasma Physics and Controlled Nuclear Fusion Research, IAEA, Baltimore, 1983, Vol. 1, p. 545; Report No. IAEA-CN-41/G-3, 1983.
4. K. Ishii, T. Goto, Y. Goi, et al.: Phys. Rev. Lett. 83 (1999) 3438.
5. K. Yatsu, L.G. Bruskin, T. Cho, et al.: Nucl. Fusion 39 (1999) 1707.