TY - RPRT TI - Precise and efficient formation keeping at Earth-Sun L2 for Starshade missions AU - Martin, Stefan R. AU - Bottom, Michael AU - Seubert, Carl R. AU - Scharf, Daniel P. AU - Flinois, Thibault L.B. PY - 2019 UR - https://ntrs.nasa.gov/citations/20210009166 ID - 20210009166 ER -