| Blue, Jennifer 17 December 2008 | Cambridge Advanced Learner's Dictionary Second Edition ed |
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| "Formation of gas and ice giant planets" | Munsell, Kirk; Smith, Harman; Harvey, Samantha 13 November 2007 |
| "Comparative models of Uranus and Neptune" | Baldwin, Emily 21 January 2010 |
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| Monthly Notices of the Royal Astronomical Society |
"Explanation of the observed irregularities in the motion of Uranus, on the hypothesis of disturbance by a more distant planet".
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