TY  - RPRT
TI  - Elliptic capture orbits for missions to the near planets.
AU  - Casal, F. G.
AU  - Mascy, A. C.
AU  - Swenson, B. L.
PY  - 1968
UR  - https://ntrs.nasa.gov/citations/19680056834
ID  - 19680056834
ER  -