TY  - RPRT
TI  - Minimum-impulse time-free transfer between elliptic orbits
AU  - Edelbaum, T. N.
AU  - Gobetz, F. W.
AU  - Washington, M.
PY  - 1966
UR  - https://ntrs.nasa.gov/citations/19660030604
ID  - 19660030604
ER  -