TY  - RPRT
TI  - Electron-bombardment thrusters using liquid- mercury cathodes.
AU  - Eckhardt, W. O.
AU  - King, H. J.
AU  - Knechtli, R. C.
AU  - Ward, W.
PY  - 1966
UR  - https://ntrs.nasa.gov/citations/19660045882
ID  - 19660045882
ER  -