Carney, B. W. (May 1983), "A photometric search for halo binaries. I - New observational data", Astronomical Journal, 88: 610–641, Bibcode:1983AJ.....88..610C, doi:10.1086/113350
Carney, B. W. (May 1983), "A photometric search for halo binaries. I - New observational data", Astronomical Journal, 88: 610–641, Bibcode:1983AJ.....88..610C, doi:10.1086/113350