1. Ts. S. Khetsuriani, E. V. Khutsishvili, V. I. Skomorovskii, M. Sh. Gigolashvili, A. K. Mayer, and E. I. Tetruashvili,Bull. Abastum. Astrofiz. Obs., No. 66, 105 (1989).
2. Solar-Geophysical Data, Boulder, Colorado, No. 425 (1980).
3. Soln. Dannye, No. 11, (1979).
4. Solar-Geophysical Data, Boulder, Colorado, No. 424, (1979).
5. Ts. S. Khetsuriani and E. I. Tetruashvili,Bull. Abastum. Astrofiz. Obs., No. 73, 19 (1993).