TY  - RPRT
TI  - Program manual for HILTOP, a heliocentric interplanetary low thrust trajectory optimization program. Part 2: Subroutine descriptions
AU  - Mann, F. I.
AU  - Horsewood, J. L.
PY  - 1974
UR  - https://ntrs.nasa.gov/citations/19750020013
ID  - 19750020013
ER  -