TY  - RPRT
TI  - Study to document low thrust trajectory optimization programs HILTOP and ASTOP
AU  - Horsewood, J. L.
AU  - Mann, F. I.
AU  - Pines, S.
PY  - 1974
UR  - https://ntrs.nasa.gov/citations/19750015563
ID  - 19750015563
ER  -