TY  - RPRT
TI  - Circulating transportation orbits between earth and Mars
AU  - Friedlander, A. L.
AU  - Niehoff, J. C.
AU  - Byrnes, D. V.
AU  - Longuski, J. M.
PY  - 1986
UR  - https://ntrs.nasa.gov/citations/19860063167
ID  - 19860063167
ER  -