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Tomkin, J.؛ Popper, D. M. (يونيو 1986). "Rediscussion of eclipsing binaries. XV - Alpha Coronae Borealis, a main-sequence system with components of types A and G". Astronomical Journal. ج. 91: 1428. Bibcode:1986AJ.....91.1428T. DOI:10.1086/114121.
Güdel, M.؛ Arzner, K.؛ Audard, M.؛ Mewe, R. (مايو 2003). "Tomography of a stellar X-ray corona: alpha Coronae Borealis". Astronomy and Astrophysics. ج. 403: 155–171. Bibcode:2003A&A...403..155G. DOI:10.1051/0004-6361:20030257.
Royer, F.؛ Grenier, S.؛ Baylac, M.-O.؛ Gómez, A. E.؛ Zorec, J. (أكتوبر 2002). "Rotational velocities of A-type stars in the northern hemisphere. II. Measurement of v sin i". Astronomy and Astrophysics. ج. 393 ع. 3: 897–911. arXiv:astro-ph/0205255. Bibcode:2002A&A...393..897R. DOI:10.1051/0004-6361:20020943. Table 8.