«The Colour of Stars», Commonwealth Scientific and Industrial Research Organisation, Australia Telescope, Outreach and Education, 21 de dezembro de 2004, consultado em 16 de janeiro de 2012
Kozok, J. R. (setembro de 1985), «Photometric observations of emission B-stars in the southern Milky Way», Astronomy and Astrophysics Supplement Series, 61: 387–405, Bibcode:1985A&AS...61..387K.
Bernacca, P. L.; Perinotto, M. (1970), «A catalogue of stellar rotational velocities», Contributi Osservatorio Astronomico di Padova in Asiago, 239 (1), Bibcode:1970CoAsi.239....1B.