The Physical Nature of Subdwarf A Stars: White Dwarf ImpostorsDOI: info:10.3847/1538-4357/aa67e4v. 83923
Brown, Warren R., Kilic, Mukremin, and Gianninas, A. 2017. "The Physical Nature of Subdwarf A Stars: White Dwarf Impostors." The Astrophysical Journal, 839 23. https://doi.org/10.3847/1538-4357/aa67e4.