Karitskaya, E., N. Bochkarev, A. Bondar, G. Galazutdinov, F. Musaev, A. Sapar, V. Shimanskii, M. Agafonov, и O. Sharova. «The High-Resolution Optical Spectroscopy As a Method of X-Ray Binary CYG X-1 Investigation. The Results of CYG X-1 Monitoring During 2002-2004». Известия Крымской астрофизической обсерватории, Т. 103, № 3, июль 2007 г., С. 152-, https://jncrao.ru/index.php/izvcrao/article/view/252.