TY  - RPRT
TI  - 2018 NASA Green Propulsion Technology Development Roadmap
AU  - Cavender, D. P.
AU  - Marshall, W. M.
AU  - Maynard, A. P.
PY  - 2018
UR  - https://ntrs.nasa.gov/citations/20180006412
ID  - 20180006412
ER  -