Kiss, L.L.; Szabó, G.M.; Bedding, T.R. (2006). «Variability in red supergiant stars: Pulsations, long secondary periods and convection noise». Monthly Notices of the Royal Astronomical Society372 (4): 1721. doi:10.1111/j.1365-2966.2006.10973.x. Bibcode: 2006MNRAS.372.1721K.
Kiss, L.L.; Szabó, G.M.; Bedding, T.R. (2006). «Variability in red supergiant stars: Pulsations, long secondary periods and convection noise». Monthly Notices of the Royal Astronomical Society372 (4): 1721. doi:10.1111/j.1365-2966.2006.10973.x. Bibcode: 2006MNRAS.372.1721K.