The X-ray Energy Dependence of the Relation Between Optical and X-ray Emission in QuasarsDOI: info:10.1088/0004-637X/708/2/1388v. 7081388–1397
Young, M., Elvis, Martin, and Risaliti, Guido. 2010. "The X-ray Energy Dependence of the Relation Between Optical and X-ray Emission in Quasars." The Astrophysical Journal, 708 1388–1397. https://doi.org/10.1088/0004-637X/708/2/1388.