Tomkin, J.; Popper, D. M. (1986). «Rediscussion of eclipsing binaries. XV - Alpha Coronae Borealis, a main-sequence system with components of types A and G». Astronomical Journal. 91. Bibcode:1986AJ.....91.1428T. doi:10.1086/114121.CS1-vedlikehold: Flere navn: forfatterliste (link)
Güdel, M.; Arzner, K.; Audard, M.; Mewe, R. (2003). «Tomography of a stellar X-ray corona: alpha Coronae Borealis». Astronomy and Astrophysics. 403: 155–171. Bibcode:2003A&A...403..155G. doi:10.1051/0004-6361:20030257.CS1-vedlikehold: Flere navn: forfatterliste (link)
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Tomkin, J.; Popper, D. M. (1986). «Rediscussion of eclipsing binaries. XV - Alpha Coronae Borealis, a main-sequence system with components of types A and G». Astronomical Journal. 91. Bibcode:1986AJ.....91.1428T. doi:10.1086/114121.CS1-vedlikehold: Flere navn: forfatterliste (link)
Güdel, M.; Arzner, K.; Audard, M.; Mewe, R. (2003). «Tomography of a stellar X-ray corona: alpha Coronae Borealis». Astronomy and Astrophysics. 403: 155–171. Bibcode:2003A&A...403..155G. doi:10.1051/0004-6361:20030257.CS1-vedlikehold: Flere navn: forfatterliste (link)