«The Colour of Stars», Commonwealth Scientific and Industrial Research Organisation, Australia Telescope, Outreach and Education, 21 de dezembro de 2004, consultado em 27 de outubro de 2012, arquivado do original em 22 de setembro de 2007
doi.org
dx.doi.org
Fernie, J. D. (maio de 1983), «New UBVRI photometry for 900 supergiants», Astrophysical Journal Supplement Series, 52: 7–22, Bibcode:1983ApJS...52....7F, doi:10.1086/190856
Massarotti, Alessandro; et al. (janeiro de 2008), «Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity», The Astronomical Journal, 135 (1): 209–231, Bibcode:2008AJ....135..209M, doi:10.1088/0004-6256/135/1/209
Gray, R. O.; Graham, P. W.; Hoyt, S. R. (abril de 2001), «The Physical Basis of Luminosity Classification in the Late A-, F-, and Early G-Type Stars. II. Basic Parameters of Program Stars and the Role of Microturbulence», The Astronomical Journal, 121 (4): 2159–2172, Bibcode:2001AJ....121.2159G, doi:10.1086/319957
Fernie, J. D. (maio de 1983), «New UBVRI photometry for 900 supergiants», Astrophysical Journal Supplement Series, 52: 7–22, Bibcode:1983ApJS...52....7F, doi:10.1086/190856
Massarotti, Alessandro; et al. (janeiro de 2008), «Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity», The Astronomical Journal, 135 (1): 209–231, Bibcode:2008AJ....135..209M, doi:10.1088/0004-6256/135/1/209
Gray, R. O.; Graham, P. W.; Hoyt, S. R. (abril de 2001), «The Physical Basis of Luminosity Classification in the Late A-, F-, and Early G-Type Stars. II. Basic Parameters of Program Stars and the Role of Microturbulence», The Astronomical Journal, 121 (4): 2159–2172, Bibcode:2001AJ....121.2159G, doi:10.1086/319957
«The Colour of Stars», Commonwealth Scientific and Industrial Research Organisation, Australia Telescope, Outreach and Education, 21 de dezembro de 2004, consultado em 27 de outubro de 2012, arquivado do original em 22 de setembro de 2007
