Johnson, H. L.; et al, UBVRIJKL photometry of the bright stars, Communications of the Lunar and Planetary Laboratory, 1966, 4 (99), Bibcode:1966CoLPL...4...99J
Houk, Nancy, Michigan catalogue of two-dimensional spectral types for the HD stars 2, Ann Arbor: Dept. of Astronomy, University of Michigan, 1978, Bibcode:1978mcts.book.....H
Wilson, R. E. General Catalogue of Stellar Radial Velocities. Carnegie Institute of Washington D.C. 1953. Bibcode:1953GCRV..C......0W.