TY  - RPRT
TI  - Minimum propellant consumption round-trip trajectories to Mars for constant-thrust, constant-specific-impulse vehicles with optimum coasting periods
AU  - Fishbach, L. H.
AU  - Zola, C. L.
PY  - 1966
UR  - https://ntrs.nasa.gov/citations/19660006201
ID  - 19660006201
ER  -