TY  - RPRT
TI  - Transformational Systems Concepts and Technologies for Our Future in Space
AU  - Howell, J. T.
AU  - George,P.
AU  - Mankins, J. C.
AU  - Christensen, C. B.
PY  - 2004
UR  - https://ntrs.nasa.gov/citations/20040110971
ID  - 20040110971
ER  -