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Geisler, Doug; Claria, Juan J.; Minniti, Dante (November 1991). "An improved metal abundance calibration for the Washington system". The Astronomical Journal. 102: 1836. Bibcode:1991AJ....102.1836G. doi:10.1086/116008. ISSN0004-6256.
Hill, Vanessa; François, Patrick; Primas, Francesca (eds.). "The G star problem". From Lithium to Uranium: Elemental tracers of early cosmic evolution. IAU Symposium 228. Proceedings of the International Astronomical Union Symposia and Colloquia. Vol. 228. pp. 509–511. [citation not found]
Grazyna, Stasinska (2004). "Abundance determinations in HII regions and planetary nebulae". In Esteban, C.; Garcia Lopez, R.J.; Herrero, A.; Sanchez, F. (eds.). Cosmochemistry: The melting pot of the elements. Cambridge Contemporary Astrophysics. Cambridge University Press. pp. 115–170. arXiv:astro-ph/0207500. Bibcode:2002astro.ph..7500S.
Cramer, N.; Maeder, A. (October 1979). "Luminosity and Teff determinations for B-type stars". Astronomy and Astrophysics. 78: 305. Bibcode:1979A&A....78..305C. ISSN0004-6361.
Kobi, D.; North, P. (November 1990). "A new calibration of the Geneva photometry in terms of Te, log g, (Fe/H) and mass for main sequence A4 to G5 stars". Astronomy and Astrophysics Supplement Series. 85: 999. Bibcode:1990A&AS...85..999K. ISSN0365-0138.
Geisler, Doug; Claria, Juan J.; Minniti, Dante (November 1991). "An improved metal abundance calibration for the Washington system". The Astronomical Journal. 102: 1836. Bibcode:1991AJ....102.1836G. doi:10.1086/116008. ISSN0004-6256.