Ginestet, N.; Carquillat, J. M. (2002-12), “Spectral Classification of the Hot Components of a Large Sample of Stars with Composite Spectra, and Implication for the Absolute Magnitudes of the Cool Supergiant Components”, Astrophysical Journal Supplement Series143 (2): 513-537, Bibcode: 2002ApJS..143..513G, doi:10.1086/342942
De Medeiros, J. R.; et al. (2002-11), “A catalog of rotational and radial velocities for evolved stars. II. Ib supergiant stars”, Astronomy & Astrophysics395: 97-98, Bibcode: 2002A&A...395...97D, doi:10.1051/0004-6361:20021214
McAlister, Harold A. (1978-11-01), “Speckle interferometric measurements of binary stars. II”, Astrophysical Journal225: 932-938, Bibcode: 1978ApJ...225..932M, doi:10.1086/156559
McAlister, Harold A.; et al. (1984-02), “Speckle interferometric measurements of binary stars. IX”, Astrophysical Journal Supplement Series54: 251-257, Bibcode: 1984ApJS...54..251M, doi:10.1086/190928
Hartkopf, William I.; et al. (1994-12), “ICCD Speckle Observations of Binary Stars. XI. Measurements During 1991-1993 From the Kitt Peak 4m Telescope”, Astronomical Journal108 (&): 2299-2311, Bibcode: 1994AJ....108.2299H, doi:10.1086/117242
Arellano Ferro, A.; Madore, Barry F. (1986-03-15), “Ultraviolet Survey for Hot Companions among Nonvariable Yellow Supergiants”, Astrophysical Journal302: 767-776, Bibcode: 1986ApJ...302..767A, doi:10.1086/164039
Ginestet, N.; Carquillat, J. M. (2002-12), “Spectral Classification of the Hot Components of a Large Sample of Stars with Composite Spectra, and Implication for the Absolute Magnitudes of the Cool Supergiant Components”, Astrophysical Journal Supplement Series143 (2): 513-537, Bibcode: 2002ApJS..143..513G, doi:10.1086/342942
De Medeiros, J. R.; et al. (2002-11), “A catalog of rotational and radial velocities for evolved stars. II. Ib supergiant stars”, Astronomy & Astrophysics395: 97-98, Bibcode: 2002A&A...395...97D, doi:10.1051/0004-6361:20021214
McAlister, Harold A. (1978-11-01), “Speckle interferometric measurements of binary stars. II”, Astrophysical Journal225: 932-938, Bibcode: 1978ApJ...225..932M, doi:10.1086/156559
McAlister, Harold A.; et al. (1984-02), “Speckle interferometric measurements of binary stars. IX”, Astrophysical Journal Supplement Series54: 251-257, Bibcode: 1984ApJS...54..251M, doi:10.1086/190928
Hartkopf, William I.; et al. (1994-12), “ICCD Speckle Observations of Binary Stars. XI. Measurements During 1991-1993 From the Kitt Peak 4m Telescope”, Astronomical Journal108 (&): 2299-2311, Bibcode: 1994AJ....108.2299H, doi:10.1086/117242
Arellano Ferro, A.; Madore, Barry F. (1986-03-15), “Ultraviolet Survey for Hot Companions among Nonvariable Yellow Supergiants”, Astrophysical Journal302: 767-776, Bibcode: 1986ApJ...302..767A, doi:10.1086/164039