1. The outer Solar System for 200 million years;Applegate;Astron J.,1986
2. The secular variations of the orbital elements of the principal planets;Brouwer;Astron. Papers Amer. Eph. Naut. Almanac,1950
3. The long-term evolution project;Carusi,1985
4. Elements of the outer planets for one million years;Cohen;Astron. Paper Amer. Eph. Naut. Almanac,1973
5. The long-term evolution of orbits in the Solar System: A mapping approach;Duncan,1988