1. Abt, H., and Biggs, E. 1972, ‘Bibliography of Stellar Radial Velocities’, Kitt Peak National Obs., Tucson.
2. Buzzano, A., Caputo, R., Sestili, M., and Castellani, V. 1982, Astron. Astrophys. Suppl. 59, 145.
3. Bessell, M.S. 1979, Publ. Astron. Soc. Pacific
91, 589.
4. Ciardullo, R., and Demarque, P. 1977, Trans. Yale Obs. No. 33
5. Eggen, O.J. 1962, R. Obs. Bull. No. 51