1. A. V. Gurevich, Nonlinear Phenomena in the Ionosphere (Springer-Verlag, New York, 1978).
2. Yu. P. Raizer, Gas Discharge Physics (Nauka, Moscow, 1987; Springer-Verlag, Berlin, 1991).
3. V. B. Gildenburg and A. V. Kim, Zh. Éksp. Teor. Fiz. 74, 141 (1978) [Sov. Phys. JETP 47, 72 (1978)].
4. V. B. Gildenburg, in Nonlinear Waves (Nauka, Moscow, 1981), p. 87.
5. W. Wo and J. S. Degroot, Phys. Fluids 27, 475 (1984).