1. Appleby, G.M., Morrison, L.V., White, M.T.: 1983,Royal Greenwich Obs. Bull. No. 192.
2. Aoki, S., S�ma, M., Kinoshita, H., Inoue, K.: 1983,Astr. Astrophys.,128, 263.
3. Eckert, W.J., Jones, R., Clark, H.K.: 1954, ?Improved Lunar Ephemeris 1952?1959?, 283, US Goernment Printing Office, Washington DC.
4. Fricke, W.: 1982,Astr. Astrophys.,107, L13.
5. IAU XVI General Assembly (1976): 1977, Joint rep. IAU Commis. 4, precession, planetary ephemeris, units and time-scales.Trans. Int. Astr. Un.,16B, 56.