1. G. A. Bazilevskaya and R. M. Golynskaya, “On the propagation of solar cosmic rays in an interplanetary medium taking into account adiabatic focusing,” Geomagn. Aeron. 29, 204–209 (1989).
2. B. A. Gal’perin, I. N. Toptygin, and A. A. Fradkin, “Scattering of particles by magnetic inhomogeneities in a strong magnetic field,” J. Exp. Theor. Phys. 33, 526–531 (1971).
3. I. N. Toptygin, “On the time dependence of the intensity of cosmic rays at the anisotropic stage of solar flares,” Geomagn. Aeron. 12, 989–995 (1972).
4. I. N. Toptygin, Cosmic Rays in Interplanetary Magnetic Fields (Nauka, Moscow, 1983; Reidel, Dordrecht, 1985).
5. J. Beeck and G. Wibberenz, “Pitch angle distributions of solar energetic particles and the local scattering properties of the interplanetary medium,” Astrophys. J. 311, 437 (1986).