(en) Trevor J. David et Lynne A. Hillenbrand, « The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets », The Astrophysical journal, vol. 804, no 2, , p. 146 (DOI10.1088/0004-637X/804/2/146, Bibcode2015ApJ...804..146D, arXiv1501.03154)
(en) Trevor J. David et Lynne A. Hillenbrand, « The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets », The Astrophysical journal, vol. 804, no 2, , p. 146 (DOI10.1088/0004-637X/804/2/146, Bibcode2015ApJ...804..146D, arXiv1501.03154)
(en) C. Morossiet al., « Metallicity Determinations from Ultraviolet-Visual Spectrophotometry. I. The Test Sample », The Astrophysical journal, vol. 577, no 1, , p. 377–388 (DOI10.1086/342144, Bibcode2002ApJ...577..377M)
(en) N. Houk et C. Swift, « Michigan catalogue of two-dimensional spectral types for the HD Stars », Michigan Spectral Survey, vol. 5, (Bibcode1999MSS...C05....0H)
(en) J.-C. Mermilliod, « Compilation of Eggen's UBV data, transformed to UBV (non publié) », Catalogue of Eggen's UBV data, SIMBAD, (Bibcode1986EgUBV........0M)
(en) Trevor J. David et Lynne A. Hillenbrand, « The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets », The Astrophysical journal, vol. 804, no 2, , p. 146 (DOI10.1088/0004-637X/804/2/146, Bibcode2015ApJ...804..146D, arXiv1501.03154)
(en) C. Morossiet al., « Metallicity Determinations from Ultraviolet-Visual Spectrophotometry. I. The Test Sample », The Astrophysical journal, vol. 577, no 1, , p. 377–388 (DOI10.1086/342144, Bibcode2002ApJ...577..377M)