Кеплерови закони — разлика између измена

* A derivation of Kepler's third law of planetary motion is a standard topic in engineering mechanics classes. See, for example, pages 161&ndash;164 of {{Cite journal|first=J. L. |last=Meriam|origyear=1966|year=1971|title=Dynamics, 2nd ed |location=New York|publisher=John Wiley|isbn=978-0-471-59601-1|postscript=<!--None-->|pages=}}.

* Murray and Dermott, Solar System Dynamics. {{page1|location=|publisher=Cambridge University Press|year=1999|isbn=978-0-521-57597-3|pages=}}

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