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  1. The controversy surrounding the secular acceleration of the moon's mean motion.David Kushner - 1989 - Archive for History of Exact Sciences 39 (4):291-316.
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  • General scholium.Isaac Newton - 1999 - In The Principia: Mathematical Principles of Natural Philosophy. University of California Press. pp. 939-944.
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  • Essays on the Intellectual Powers of Man.Thomas Reid & A. D. Woozley - 1942 - Philosophy 17 (66):189-190.
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