1. Obliquity of precession for the last 5,000,000 years;Berger;Astron. Astrophys.,1976
2. Termes a longues periodes dan le systeme solaire;Bretagnon;Astron. Astrophys.,1974
3. Variations in the Earth's orbit: Pacemaker of the ice ages?;Evans;Science,1977
4. History of the lunar orbit;Goldreich;Rev. Geophys. Sp. Sci.,1966
5. Variations in the Earth's orbit: Peacemaker of the ice ages;Hays;Science,1976