Não informado. (1969). Celestial Mechanics: An international journal of space dynamics. Reidel Publishing.
Chicago-viite (17. p.)Não informado. Celestial Mechanics: An International Journal of Space Dynamics. Dordrecht, Holanda: Reidel Publishing, 1969.
MLA-viite (8. p.)Não informado. Celestial Mechanics: An International Journal of Space Dynamics. Reidel Publishing, 1969.
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