Nicolet، B. (1978)، "Photoelectric photometric Catalogue of homogeneous measurements in the UBV System"، Astronomy and Astrophysics Supplement Series، ج. 34، ص. 1–49، Bibcode:1978A&AS...34....1N.
Wilson، R. E. (1953)، General Catalogue of Stellar Radial Velocities، Carnegie Institute of Washington, D.C.، Bibcode:1953GCRV..C......0W.