TY  - RPRT
TI  - Enhancing space transportation: The NASA program to develop electric propulsion
AU  - Bennett, Gary L.
AU  - Watkins, Marcus A.
AU  - Byers, David C.
AU  - Barnett, John W.
PY  - 1990
UR  - https://ntrs.nasa.gov/citations/19910009868
ID  - 19910009868
ER  -