TY  - RPRT
TI  - Satellite voice broadcast. Volume 1: Executive summary
AU  - Bachtell, E. E.
AU  - Bettadapur, S. S.
AU  - Coyner, J. V.
AU  - Farrell, C. E.
PY  - 1985
UR  - https://ntrs.nasa.gov/citations/19860015404
ID  - 19860015404
ER  -