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Sturch, C. R.; Helfer, H. L. (November 1972), "UBVRI photometry of north galactic pole K giants. II", Astronomical Journal, 77: 726, Bibcode:1972AJ.....77..726S, doi:10.1086/111344.
Jackson, E. S.; et al. (May 1957), "The Orbits of the Spectroscopic Binaries Omicron Tauri, Xi Cancri, and Mu Ursae Majories", Astrophysical Journal, 125: 712, Bibcode:1957ApJ...125..712J, doi:10.1086/146345.