TY  - RPRT
TI  - Reverse-thrust technology for variable-pitch fan propulsion systems
AU  - Sagerser, D. A.
AU  - Schaefer, J. W.
AU  - Dietrich, D. A.
PY  - 1976
UR  - https://ntrs.nasa.gov/citations/19780016127
ID  - 19780016127
ER  -