1. A. V. Kopylov, Priroda, No. 5, 31 (1998); No. 6, 27 (1998).
2. A. V. Fedorova, in Modern Problems of Physics and Stellar Evolution [in Russian] (Nauka, Moscow, 1989), p. 268.
3. J. N. Bahcall, Neutrino Astrophysics (Cambridge Univ. Press, Cambridge, 1989; Mir, Moscow, 1993).
4. J. N. Bahcall, Sol. Phys. 100, 53 (1985).
5. S. P. Mikheev and A. Yu. Smirnov, Usp. Fiz. Nauk 153, 3 (1987) [Sov. Phys. Usp. 30, 759 (1987)].