Johnson, H. L. та ін. (1966). UBVRIJKL photometry of the bright stars. Communications of the Lunar and Planetary Laboratory. 4 (99): 99. Bibcode:1966CoLPL...4...99J.
Wilson, R. E. (1953). General Catalogue of Stellar Radial Velocities. Carnegie Institute Washington D.C. Publication. Carnegie Institute of Washington D.C. Bibcode:1953GCRV..C......0W.