Systematically smaller single-epoch quasar black hole masses using a radius–luminosity relationship corrected for spectral bias. - Maithil, Jaya; Brotherton, Michael S; Shemmer, Ohad; Du, Pu; Wang, Jian-Min; Myers, Adam D; McLane, Jacob N; Dix, Cooper; Matthews, Brandon M (Monthly Notices of the Royal Astronomical Society, 2022)