TY - RPRT TI - Preliminary Design Considerations for Access and Operations in Earth-Moon L1/L2 Orbits AU - Folta, David C. AU - Pavlak, Thomas A. AU - Haapala, Amanda F. AU - Howell, Kathleen C. PY - 2013 UR - https://ntrs.nasa.gov/citations/20160000801 ID - 20160000801 ER -