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- "Magellan's Perspective View of Sedna Planitia, 45° N, 11° E". NASA JPL. Retrieved 9 October 2011.
- Basilevsky, Alexander T.; James W. Head (December 1995). "Regional and global stratigraphy of Venus: a preliminary assessment and implications for the geological history of Venus". Planetary and Space Science. 12 43: 1523–1553. Bibcode:1995P&SS...43.1523B. doi:10.1016/0032-0633(95)00070-4. Retrieved 12 June 2010.
- A. T. Basilevsy; J. W. Head (1996). "Regional and global stratigraphy of Venus: a preliminary assessment and implications for the geologic history of Venus" (PDF). Lunar and Planetary Institute, XXVII. Retrieved 9 October 2011.
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