Não informado. (1989). Celestial Mechanics & Dynamical Astronomy: An international journal of space dynamics. Kluwer Academic Publishers.
Chicago-viite (17. p.)Não informado. Celestial Mechanics & Dynamical Astronomy: An International Journal of Space Dynamics. Dordrecht, Holanda: Kluwer Academic Publishers, 1989.
MLA-viite (8. p.)Não informado. Celestial Mechanics & Dynamical Astronomy: An International Journal of Space Dynamics. Kluwer Academic Publishers, 1989.
Varoitus: Nämä viitteet eivät aina ole täysin luotettavia.