TY  - RPRT
TI  - An accelerated development, reduced cost approach to lunar/Mars exploration using a modular NTR-based space transportation system
AU  - Borowski, S.
AU  - Clark, J.
AU  - Sefcik, R.
AU  - Corban, R.
AU  - Alexander, S.
PY  - 1992
UR  - https://ntrs.nasa.gov/citations/19920074429
ID  - 19920074429
ER  -