Ultraviolet Observations of the X-Ray Photoionized Wind of Cygnus X-1 during X-Ray Soft/High StateDOI: info:10.1086/586692v. 6781248–1262
Vrtilek, S. D., Boroson, B. S., Hunacek, A., Gies, D., and Bolton, C. T. 2008. "Ultraviolet Observations of the X-Ray Photoionized Wind of Cygnus X-1 during X-Ray Soft/High State." The Astrophysical Journal, 678 1248–1262. https://doi.org/10.1086/586692.