TY  - RPRT
TI  - Aircraft noise synthesis system: Version 4 user instructions
AU  - Mccurdy, David A.
AU  - Sullivan, Brenda M.
AU  - Grandle, Robert E.
PY  - 1987
UR  - https://ntrs.nasa.gov/citations/19870011364
ID  - 19870011364
ER  -