Levesque, Emily M.; Massey, Philip; Olsen, K. A. G.; Plez, Bertrand; Josselin, Eric «The Effective Temperature Scale of Galactic Red Supergiants: Cool, but Not as Cool as We Thought». The Astrophysical Journal, 628, 2, 2005, pàg. 973. arXiv: astro-ph/0504337. Bibcode: 2005ApJ...628..973L. DOI: 10.1086/430901.
Levesque, Emily M.; Massey, Philip; Olsen, K. A. G.; Plez, Bertrand; Josselin, Eric «The Effective Temperature Scale of Galactic Red Supergiants: Cool, but Not as Cool as We Thought». The Astrophysical Journal, 628, 2, 2005, pàg. 973. arXiv: astro-ph/0504337. Bibcode: 2005ApJ...628..973L. DOI: 10.1086/430901.
harvard.edu
adsabs.harvard.edu
Levesque, Emily M.; Massey, Philip; Olsen, K. A. G.; Plez, Bertrand; Josselin, Eric «The Effective Temperature Scale of Galactic Red Supergiants: Cool, but Not as Cool as We Thought». The Astrophysical Journal, 628, 2, 2005, pàg. 973. arXiv: astro-ph/0504337. Bibcode: 2005ApJ...628..973L. DOI: 10.1086/430901.
illinois.edu
stars.astro.illinois.edu
«VV Cephei» (en anglès). Stars. Jim Kaler. [Consulta: 15 desembre 2020].