Maury, Antonia C. The Spectral Changes of Beta Lyrae. Annals of the Astronomical Observatory of Harvard College (Cambridge, MA). 1933, 84 (8): 207–255 [12 January 2013]. (原始内容存档于2020-02-18).
Maury, Antonia C. The Spectral Changes of Beta Lyrae. Annals of the Astronomical Observatory of Harvard College (Cambridge, MA). 1933, 84 (8): 207–255 [12 January 2013]. (原始内容存档于2020-02-18).