TY  - RPRT
TI  - Passive obstacle location for rotorcraft guidance
AU  - Menon, P. K. A.
AU  - Chatterji, G. B.
AU  - Sridhar, B.
PY  - 1991
UR  - https://ntrs.nasa.gov/citations/19910065023
ID  - 19910065023
ER  -