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De Medeiros, J. R.; et al. (2002-11), “A catalog of rotational and radial velocities for evolved stars. II. Ib supergiant stars”, Astronomy and Astrophysics395: 97-98, Bibcode: 2002A&A...395...97D, doi:10.1051/0004-6361:20021214
Ayres, Thomas R.; Brown, Alexander; Harper, Graham M. (2005-07), “Chandra Observations of Coronal Emission from the Early G Supergiants α and β Aquarii”, Astrophysical Journal Letters627 (1): 53-56, Bibcode: 2005ApJ...627L..53A, doi:10.1086/431977
Lyubimkov, Leonid S.; et al. (2010-02), “Accurate fundamental parameters for A-, F- and G-type Supergiants in the solar neighbourhood”, Monthly Notices of the Royal Astronomical Observatory402 (2): 1367-1379, Bibcode: 2010MNRAS.402.1369L, doi:10.1111/j.1365-2966.2009.15979.x
De Medeiros, J. R.; et al. (2002-11), “A catalog of rotational and radial velocities for evolved stars. II. Ib supergiant stars”, Astronomy and Astrophysics395: 97-98, Bibcode: 2002A&A...395...97D, doi:10.1051/0004-6361:20021214
Ayres, Thomas R.; Brown, Alexander; Harper, Graham M. (2005-07), “Chandra Observations of Coronal Emission from the Early G Supergiants α and β Aquarii”, Astrophysical Journal Letters627 (1): 53-56, Bibcode: 2005ApJ...627L..53A, doi:10.1086/431977