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Zorec, J.; et al. (2009), «Fundamental parameters of B supergiants from the BCD system. I. Calibration of the (λ_1, D) parameters into Teff», Astronomy and Astrophysics, 501 (1): 297–320, Bibcode:2009A&A...501..297Z, doi:10.1051/0004-6361/200811147
Cowley, A.; et al. (1969), «A study of the bright A stars. I. A catalogue of spectral classifications», Astronomical Journal, 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819
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Rhee, Joseph H.; Song, Inseok; Zuckerman, B.; McElwain, Michael (2007), «Characterization of Dusty Debris Disks: The IRAS and Hipparcos Catalogs», The Astrophysical Journal, 660 (2): 1556–1571, Bibcode:2007ApJ...660.1556R, doi:10.1086/509912
Zorec, J.; et al. (2009), «Fundamental parameters of B supergiants from the BCD system. I. Calibration of the (λ_1, D) parameters into Teff», Astronomy and Astrophysics, 501 (1): 297–320, Bibcode:2009A&A...501..297Z, doi:10.1051/0004-6361/200811147
Cowley, A.; et al. (1969), «A study of the bright A stars. I. A catalogue of spectral classifications», Astronomical Journal, 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819