Gray, R. O.; et al, Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc-The Southern Sample, The Astronomical Journal, July 2006, 132 (1): 161–170, Bibcode:2006AJ....132..161G, arXiv:astro-ph/0603770, doi:10.1086/504637
Bok, B. J.; Bok, P. F.; Miller, E. W., Photometric standards for the southern hemisphere. II, Astronomical Journal, November 1972, 77: 733, Bibcode:1972AJ.....77..733B, doi:10.1086/111346
Gray, R. O.; et al, Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc-The Southern Sample, The Astronomical Journal, July 2006, 132 (1): 161–170, Bibcode:2006AJ....132..161G, arXiv:astro-ph/0603770, doi:10.1086/504637
Bok, B. J.; Bok, P. F.; Miller, E. W., Photometric standards for the southern hemisphere. II, Astronomical Journal, November 1972, 77: 733, Bibcode:1972AJ.....77..733B, doi:10.1086/111346
Gray, R. O.; et al, Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc-The Southern Sample, The Astronomical Journal, July 2006, 132 (1): 161–170, Bibcode:2006AJ....132..161G, arXiv:astro-ph/0603770, doi:10.1086/504637