1. 1.M. Abramovitz and I. Stigun, Handbook of Mathematical Functions with Formulas, Graphs, and Mathematical Tables (National Bureau of Standards, Washington, DC, 1964; Nauka, Moscow, 1979).
2. 2.G. A. Bazilevskaya and R. M. Golynskaya, "On distribution of solar cosmic rays in interstellar medium with consideration of adiabatic focusing," Geomagn. Aeron. 29, 204-209 (1989).
3. 3.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).
4. 4.I. S. Gradshteyn and I. M. Ryzhik, Table of Integrals, Series, and Products (Fizmatgiz, Moscow, 1963; Academic, New York, 1965).
5. 5.L. I. Dorman and M. E. Katz, "On intensity fluctuations of solar cosmic rays," in Proc. Solar Cosmic Rays and Their Penetration into the Earth's Magnetosphere: 5th Leningrad Int. Semin., Leningrad, July 26-29, 1973 (Leningrad Fiz.-Tekh. Inst. im. A. F. Ioffe, Leningrad, 1973), pp. 311-321.