1. Aarseth, S.J.: 1972, in Lecar, M. (ed) “Gravitational N-Body Problem”, Reidel, Dordrecht, p. 29.
2. Agekian, T.A. and Martynova, A.I.: 1973, Vestnik Leningrad Univ.
1, 122.
3. Anosova, J.P.: 1986, Astrophys. Space Sci.
124, 217.
4. Barbanis, B.: 1987, Celest. Mech. (in press).
5. Bartlett, J.H.: 1978, Celest. Mech. 17, 3.