- Author: Committee on Planetary and Lunar Exploration
- Language: English
- Year: 2003
- Author: Committee on Planetary and Lunar Exploration National Research Council
- Language: English
- Year: 2002
- Author: Committee on Planetary and Lunar Exploration
- Language: English
- Year: 2002
- Author: Committee on Planetary and Lunar Exploration National Research Council
- Language: English
- Year: 1999