1. V. Myakutin, A. E. Piskunov, F. Sakhibov, and M. A. Smirnov, in XXIInd General Assembly of the IAU, Astronomy Poster Abstracts, Ed. by H. van Woerden (Twin Press, Sliedrecht, 1994), p. 59.
2. A. S. Gusev, V. I. Myakutin, F. Kh. Sakhibov, and M. A. Smirnov, Astron. Zh. 84, 266 (2007) [Astron. Rep. 51, 234 (2007)].
3. F. Kh. Sakhibov and M. A. Smirnov, Astron. Zh. 81, 998 (2004) [Astron. Rep. 48, 909 (2004)].
4. F. Kh. Sakhibov and M. A. Smirnov, Astron. Zh. 78, 3 (2001) [Astron. Rep. 45, 1 (2001)].
5. F. Sakhibov and M. A. Smirnov, Astron. Astrophys. 354, 802 (2000).