TY  - RPRT
TI  - Rotorcraft blade/vortex interaction noise - Its generation, radiation, and control
AU  - Preisser, J. S.
AU  - Brooks, T. F.
AU  - Martin, R. M.
PY  - 1990
UR  - https://ntrs.nasa.gov/citations/19910039717
ID  - 19910039717
ER  -