1. T. Katsouleas and J. M. Dawson, Phys. Rev. Lett. 51, 392 (1983).
2. Y. Ohsawa and J.-I. Sakai, Geophys. Res. Lett. 12, 617 (1985).
3. V. S. Berezinskij, S. V. Bulanov, V. A. Dogiel, V. L. Ginzburg, and V. S. Ptuskin, Astrophysics of Cosmic Rays (North Holland, Amsterdam, 1990).
4. G. A. Askar’yan, S. V. Bulanov, F. Pegoraro, and A. M. Pukhov, Pis’ma Zh. Éksp. Teor. Fiz. 60, 251 (1994) [JETP Lett. 60, 240 (1994)]; Fiz. Plazmy 21, 884 (1995) [Plasma Phys. Rep. 21, 835 (1995)]; Comments Plasma Phys. Controll. Fusion 17, 35 (1996).
5. S. V. Bulanov, E. Lazzaro, and J.-I. Sakai, J. Phys. Soc. Jpn. 66, 3696 (1997).