TY  - RPRT
TI  - Technology needs for lunar and Mars space transfer systems
AU  - Woodcock, Gordon R.
AU  - Cothran, Bradley C.
AU  - Donahue, Benjamin
AU  - Mcghee, Jerry
PY  - 1991
UR  - https://ntrs.nasa.gov/citations/19910059531
ID  - 19910059531
ER  -