TY  - RPRT
TI  - Gravity-assisted trajectories for unmanned space exploration
AU  - Edgecombe, D. S.
AU  - Luce, R. G.
AU  - Porter, R. F.
PY  - 1965
UR  - https://ntrs.nasa.gov/citations/19660003798
ID  - 19660003798
ER  -