Castillo-Rogez, J. C.; Matson, D. L.; Sotin, C.; Johnson, T. V.; Lunine, Jonathan I.; Thomas, P. C. (2007). Iapetus' geophysics: Rotation rate, shape, and equatorial ridge. Icarus. 190 (1): 179—202. Bibcode:2007Icar..190..179C. doi:10.1016/j.icarus.2007.02.018.
Castillo-Rogez, J. C.; Matson, D. L.; Sotin, C.; Johnson, T. V.; Lunine, Jonathan I.; Thomas, P. C. (2007). Iapetus' geophysics: Rotation rate, shape, and equatorial ridge. Icarus. 190 (1): 179—202. Bibcode:2007Icar..190..179C. doi:10.1016/j.icarus.2007.02.018.