- Optech press release, "Canadian Mission Concept to Mysterious Mars moon Phobos to Feature Unique Rock-Dock Maneuver," May 3, 2007.
- PRIME: Phobos Reconnaissance & International Mars Exploration, Mars Institute website, accessed July 27, 2009.
- Mullen, Leslie. New Missions Target Mars Moon Phobos. Astrobiology Magazine (Space.com). 30 April 2009 [2009-09-05].
- http://www.telegraph.co.uk/science/space/5981624/Mars-monolith-fuels-theories-of-alien-life.html A rectangular object found jutting out of Mars's surface and caught on camera by the University of Arizona has caused speculation over the nature of the "monolith" and its origins. 9:45AM BST, August 6, 2009
- USGS Mars Global Surveyor MOC Image 55103 - Browse Page Monolith Zoom
- Analysis in year 2000 by of Lan Fleming of SPS252603 and SPS255103
- Phobos in general