TY  - RPRT
TI  - Ion Propulsion Module design and mission performance
AU  - Graf, J. E.
AU  - Boain, R. J.
AU  - Pawlik, E. V.
AU  - Pless, L. C.
PY  - 1978
UR  - https://ntrs.nasa.gov/citations/19780053523
ID  - 19780053523
ER  -