TY  - RPRT
TI  - A Two-Variable Asymptotic Solution for Three - Dimensional, Solar-Powered, Low-Thrust Trajectories in the Vicinity of the Ecliptic Plane
AU  - Wesseling, P.
PY  - 1967
UR  - https://ntrs.nasa.gov/citations/19670010587
ID  - 19670010587
ER  -