Publisher
Springer Berlin Heidelberg
Reference26 articles.
1. O. C. Wilson, M. K. V. Bappu, ApJ 125, 661 (1957)
2. P. S. Osmer, ApJS 24, 247 (1972)
3. A. Arellano Ferro, S. Giridhar, A. Goswami, MNRAS 250, 1, (1991)
4. A. Arellano Ferro, S. Giridhar, E.Rojo Arellano, RMxAA 39, 3, (2003)
5. R. O. Gray, A Digital Spectral Classifcation Atlas V1.02, (2003)