TY  - RPRT
TI  - A method for determining the characteristic functions associated with the aeroelastic instabilities of helicopter rotors in forward flight
AU  - Piarulli, V. J.
AU  - White, R. P., Jr.
PY  - 1970
UR  - https://ntrs.nasa.gov/citations/19700020850
ID  - 19700020850
ER  -