References

• Boller Th., Meurs E.J.A., Adorf H.-M., 1992, A&A 259, 101 NASA ADS
• De Jager O.C., Swanepoel J.W.H., Raubenheimer B.C., 1986, A&A 170, 187 NASA ADS
• Epchtein N., et al., 1994, Ap&SS 217, 3 NASA ADS
• Kienel C., 1996, Thesis on Covered Data Structures
• Kienel C., Kimeswenger S., 1997, A&A (submitted)
• Silverman B.W., 1986, Density Estimation for Statistics and Data Analysis. Chapman and Hall
• Sutherland W., Saunders W., 1992, MNRAS 259, 413 NASA ADS
• Waerden B.L. van der, 1957, Mathematische Statistik, Die Grundlagen der Mathematischen Wissenschaften, Band LXXXVII. Springer-Verlag
• Walker H.J., Cohen M., 1988, AJ 95, 1801 NASA ADS
• Walker H.J., Cohen M., Volk K., Wainscoat R.J., Schwartz D.E., 1989, AJ 98, 2163 NASA ADS