TY - RPRT TI - Modular thrust subsystem approaches to solar electric propulsion module design AU - Cake, J. E. AU - Sharp, G. R. AU - Oglebay, J. C. AU - Shaker, F. J. AU - Zevesky, R. J. PY - 1976 UR - https://ntrs.nasa.gov/citations/19770030176 ID - 19770030176 ER -