1. F. Winterberg, Phys. Rev., 174, 212–220 (1968).
2. M. V. Babykin, E. K. Zavoiskii, A. A. Ivanov, and L. I. Rudakov, Plasma Physics and Controlled Nuclear Fusion Research, IAEA, Vienna (1971), Vol. 1, pp. 635–643.
3. G. I. Budker, 6th European Conference on Controlled Fusion and Plasma Physics, Moscow (1973), Vol. 2, pp. 136–158.
4. R. N. Sudan, 6th European Conference on Controlled Fusion and Plasma Physics, Moscow (1973), Vol. 2, pp. 184–199.
5. B. N. Breizman and D. D. Ryutov, NucL Fusion, 14, 873–907 (1974).