1. B. Drake, NASA Decadal Planning Team Mars Mission Analysis Summary, February 2007.
2. NASA Advanced Development Office, Lunar L1 Gateway Conceptual Design Report, October 2001.
3. NASA Headquarters, Science Mission Directorate, NASA Astrophysics Implementation Plan, December 2012.
4. I.S.E.C. Group, NASA Global Exploration Roadmap, August 2013.
5. D. Folta, M. Woodard, D. Cosgrove, Stationkeeping of the First Earth–Moon Libration Orbiters: The ARTEMIS Mission, in: AAS/AIAA Astrodynamics Specialist Conference, 2013.