References

• Bailer-Jones C.A.L., Irwin M., von Hippel., 1998, MNRAS 298, 361 NASA ADS
• Balestra A., Micol A., Pasian F., Santin P., Sedmak G., Smareglia R., 1990, in Proceedings of $2^{{\rm nd}}$ ESO/ST-ECF Data Analysis Workshop, Baade D., Grosbol (eds.), ESO Conf. and Workshop Proc., p. 36
• Bratsolis E., Bellas-Velidis I., Kontizas E., Pasian F., Dapergolas A., Smareglia R., 1998, A&AS 133, 293 NASA ADS
• Cooke J.A., Emerson D., Kelly B.D., MacGillivray H.T., Dodd R.J., 1981, MNRAS 196, 397 NASA ADS
• Dapergolas A., Kontizas E., Kontizas M., Pasian F., Pucillo M., Santin P., 1991, A&AS 87, 97 NASA ADS
• Gulati R.K., Gupta R., Gothoskar P., Khobragate S., 1994, ApJ 426, 340 NASA ADS
• Krug P.A., Morton D.C., Tritton K.P., 1980, MNRAS 190, 237 NASA ADS
• Kurtz M.J., 1982, Automatic Spectral Classification, Ph.D. Thesis, Dartmouth College, New Hampsire
• Kurtz M.J., 1984, in The MK Process and Stellar Classification, Garrison B.F. (eds.). David Dunlop Observatory, Toronto, p. 136
• Murtagh F., Heck A., 1984, Multivariate Data Analysis. Reidel, Dordrecht
• Nandy K., Reddish V.C., Tritton K.P., Cooke J.A., Emerson D., 1977, MNRAS 178, 63P
• Savage A., Beard S.M., Palmer J.B., 1985, The UKST Objective Prisms I. Royal Observatory of Edinburgh
• Singh H.P., Gulati R.K., Gupta R., 1998, MNRAS 295, 312 NASA ADS
• Vieira E.F., Ponz J.D., 1995, A&AS 111, 393 NASA ADS
• von Hippel T., Storrie-Lombardi L.J., Storrie-Lombardi M.C., Irwin M.J, 1994, MNRAS 269, 97 NASA ADS