Catanzaro, G.; et al. (2010). "Spectroscopic analysis of the candidate β Cephei star σ Cas: Atmospheric characterization and line-profile variability". New Astronomy. 15 (1): 39. Bibcode:2010NewA...15...39C. doi:10.1016/j.newast.2009.05.001.
Catanzaro, G.; et al. (2010). "Spectroscopic analysis of the candidate β Cephei star σ Cas: Atmospheric characterization and line-profile variability". New Astronomy. 15 (1): 39. Bibcode:2010NewA...15...39C. doi:10.1016/j.newast.2009.05.001.
Nicolet, B. (1978). "Catalogue of homogeneous data in the UBV photoelectric photometric system". Astronomy and Astrophysics. 34: 1. Bibcode:1978A&AS...34....1N.