TY  - RPRT
TI  - Guidance, flight mechanics and trajectory optimization. Volume 3 - The two-body problem
AU  - Tamburro, M. B.
AU  - Townsend, G. E.
PY  - 1968
UR  - https://ntrs.nasa.gov/citations/19680004620
ID  - 19680004620
ER  -