Cowley, A.; et al, A study of the bright A stars. I. A catalogue of spectral classifications, Astronomical Journal, April 1969, 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819.
Gerbaldi, M.; et al, Search for reference A0 dwarf stars: Masses and luminosities revisited with HIPPARCOS parallaxes, Astronomy and Astrophysics Supplement, June 1999, 137: 273–292, Bibcode:1999A&AS..137..273G, doi:10.1051/aas:1999248.
Pintado, O. I.; Adelman, S. J., Elemental abundance analyses with the EBASIM spectrograph of the 2.1-m CASLEO Observatory Telescope. I. The late B and early A stars vec xi Octantis, alpha Sextantis, and 68 Tauri, Astronomy and Astrophysics, August 2003, 406: 987–994, Bibcode:2003A&A...406..987P, doi:10.1051/0004-6361:20030813.
Cowley, A.; et al, A study of the bright A stars. I. A catalogue of spectral classifications, Astronomical Journal, April 1969, 74: 375–406, Bibcode:1969AJ.....74..375C, doi:10.1086/110819.
Gerbaldi, M.; et al, Search for reference A0 dwarf stars: Masses and luminosities revisited with HIPPARCOS parallaxes, Astronomy and Astrophysics Supplement, June 1999, 137: 273–292, Bibcode:1999A&AS..137..273G, doi:10.1051/aas:1999248.
Pintado, O. I.; Adelman, S. J., Elemental abundance analyses with the EBASIM spectrograph of the 2.1-m CASLEO Observatory Telescope. I. The late B and early A stars vec xi Octantis, alpha Sextantis, and 68 Tauri, Astronomy and Astrophysics, August 2003, 406: 987–994, Bibcode:2003A&A...406..987P, doi:10.1051/0004-6361:20030813.