1. S. A. Yazev and V. I. Sidorov, in Modern Problems in Astrophysics and the Physics of Cosmic Plasma, Ed. by V. I. Kurkin (Inst. Soln.-Zemn. Fiz. SORAN, Irkutsk, 2007), p. 65 [in Russian].
2. S. A. Yazev, Issled. Geomagn., Aeron. Fiz. Solntsa 95, 152 (1989).
3. I. S. Sattarov, Extended Abstract of Doctoral Dissertation (Inst. Solar-Earth Physics, Siberian Branch of RAS, Irkutsk, 1994) [in Russian].
4. S. A. Yazev and E. S. Komarova, in The Sky and the Earth, Ed. by S. A. Yazev (Irkutsk State Univ., Irkutsk, 2006), p. 195 [in Russian].
5. V. Gaizauskas, K. L. Harvey, J. W. Harvey, and C. Zwaan, Astrophys. J. 265, 1056 (1983).