↑(en) Helmut A. Abt et Nidia I. Morrell, «The Relation between Rotational Velocities and Spectral Peculiarities among A-Type Stars», The Astrophysical Journal Supplement Series, vol.99, , p.135 (ISSN0067-0049, DOI10.1086/192182, Bibcode1995ApJS...99..135A)
12(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, , p.146 (ISSN0004-637X, DOI10.1088/0004-637X/804/2/146, Bibcode2015ApJ...804..146D)