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