A Full Year's Chandra Exposure on Sloan Digital Sky Survey Quasars from the Chandra Multiwavelength ProjectDOI: info:10.1088/0004-637X/690/1/644v. 690644–669
Green, Paul J., Aldcroft, Thomas L., Richards, G. T., Barkhouse, W. A., Constantin, A., Haggard, D., Karovska, M., Kim, D. -W, Kim, M., Vikhlinin, Alexey A., Anderson, S. F., Mossman, A., Kashyap, Vinay L., Myers, A. C., Silverman, J. D., Wilkes, Belinda J., and Tananbaum, Harvey. 2009. "A Full Year's Chandra Exposure on Sloan Digital Sky Survey Quasars from the Chandra Multiwavelength Project." The Astrophysical Journal, 690 644–669. https://doi.org/10.1088/0004-637X/690/1/644.