1. See, for instance,Advances in Plasma Physics, edited byA. Simon andW. B. Thompson, Vol.6 (New York, N. Y., 1976).
2. See, for instance,V. P. Silin:Parametric Interaction of High-Intensity Radiation with Plasma (in Russian) (Moscow, 1973).
3. SeeJ. A. Fejer: invited paper to theThird International Congress on Waves and Instabilities in Plasmas, Palaiseau (France), June 27-July 1, 1977, and published in theJ. Phys. C,38, 55 (1977).
4. N. Tzoar:Phys. Rev.,164, 518 (1967);165, 511 (1968);178, 356 (1969);Trans. IEEE, ED-17, 245 (1970).
5. J. I. Gersten andN. Tzoar:Phys. Rev. Lett.,27, 1650 (1971).