TY - RPRT TI - Spacecraft charging investigation - A joint research and technology program AU - Lovell, R. R. AU - Stevens, N. J. AU - Schober, W. AU - Pike, C. P. AU - Lehn, W. PY - 1976 UR - https://ntrs.nasa.gov/citations/19770029678 ID - 19770029678 ER -