Karitskaya, E. A.; Bondar, A. V.; Bochkarev, N. G.; Galazutdinov, G. A.; Musaev, F. A.; Sapar, A. A. THE OPTICAL HIGH-RESOLUTION SPECTROSCOPY AS A METHOD OF X-RAY BINARY CYG X-1 INVESTIGATION. Одес. астроном. публ. 2017, 16, 33-36.