Toward an Understanding of Changing-look Quasars: An Archival Spectroscopic Search in SDSSDOI: info:10.3847/0004-637X/826/2/188v. 826188
Ruan, John J., Anderson, Scott F., Cales, Sabrina L., Eracleous, Michael, Green, Paul J., Morganson, Eric, Runnoe, Jessie C., Shen, Yue, Wilkinson, Tessa D., Blanton, Michael R., Dwelly, Tom, Georgakakis, Antonis, Greene, Jenny E., LaMassa, Stephanie M., Merloni, Andrea, and Schneider, Donald P. 2016. "Toward an Understanding of Changing-look Quasars: An Archival Spectroscopic Search in SDSS." The Astrophysical Journal, 826 188. https://doi.org/10.3847/0004-637X/826/2/188.