TY  - RPRT
TI  - Optimum earth-to-mars roundtrip trajectories utilizing a low-thrust power-limited propulsion system.
AU  - Melbourne, W. G.
AU  - Sauer, C. G., Jr.
PY  - 1964
UR  - https://ntrs.nasa.gov/citations/19640041237
ID  - 19640041237
ER  -