1. Bagnulo, S., Cabanac, R., Jehin, E., et al. 2006, The UVES Paranal Observatory Project, http://www.sc.eso.orgsantiagouvespopfield_stars_uptonow.html
2. Berger, J. 1956, Contr. Inst. Ap. Paris, Ser. A, 217
3. Magnetic field measurements of helium-strong stars
4. Bolton, C. T., Fullerton, A. W., Bohlender, D. A., et al. 1986, The Physics of Be Stars, ed. A. Slettebak, & T. P. Snow (Cambridge: Cambridge Univ. Press), 82