Optical State Changes in the X-Ray-quiescent Black Hole A0620-00v. 673IOP PublishingL159–L162
Cantrell, Andrew G., Bailyn, Charles D., McClintock, Jeffrey E., and Orosz, Jerome A. 2008. "Optical State Changes in the X-Ray-quiescent Black Hole A0620-00." The Astrophysical Journal Letters, 673 L159–L162.