Levesque, Emily M.; Massey, Philip; Olsen, K. A. G.; Plez, Bertrand; Josselin, Eric; Maeder, Andre; Meynet, Georges (2005). «The Effective Temperature Scale of Galactic Red Supergiants: Cool, but Not as Cool as We Thought». The Astrophysical Journal628 (2): 973. Bibcode:2005ApJ...628..973L. arXiv:astro-ph/0504337. doi:10.1086/430901.
Levesque, Emily M.; Massey, Philip; Olsen, K. A. G.; Plez, Bertrand; Josselin, Eric; Maeder, Andre; Meynet, Georges (2005). «The Effective Temperature Scale of Galactic Red Supergiants: Cool, but Not as Cool as We Thought». The Astrophysical Journal628 (2): 973. Bibcode:2005ApJ...628..973L. arXiv:astro-ph/0504337. doi:10.1086/430901.
Levesque, Emily M.; Massey, Philip; Olsen, K. A. G.; Plez, Bertrand; Josselin, Eric; Maeder, Andre; Meynet, Georges (2005). «The Effective Temperature Scale of Galactic Red Supergiants: Cool, but Not as Cool as We Thought». The Astrophysical Journal628 (2): 973. Bibcode:2005ApJ...628..973L. arXiv:astro-ph/0504337. doi:10.1086/430901.