TY  - RPRT
TI  - Atmospheric density variations at 140 kilometers deduced from precise satellite radar tracking data.
AU  - Devries, L. L.
AU  - Schusterman, L.
AU  - Bruce, R. W.
PY  - 1972
UR  - https://ntrs.nasa.gov/citations/19720042744
ID  - 19720042744
ER  -