نیروی کشندی (Persian Wikipedia)

Analysis of information sources in references of the Wikipedia article "نیروی کشندی" in Persian language version.

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2books.google.com

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books.google.com

R. S. MacKay; J. D. Meiss (1987). Hamiltonian Dynamical Systems: A Reprint Selection. CRC Press. p. 36. ISBN 0-85274-205-3.
See p.509 in "Astronomy: a physical perspective", M L Kutner (2003).

harvard.edu

adsabs.harvard.edu

"On the tidal force", I N Avsiuk, in "Soviet Astronomy Letters", vol.3 (1977), pp. 96–99