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- [2] Overview of noise reduction technology in the NASA short haul (Civil Tiltrotor) program INTERNATIONAL POWERED LIFT CONFERENCE PROCEEDINGS, 1996, : 63 - 73
- [7] NASA/AHS rotorcraft noise reduction program: McDonnell Douglas Helicopter Company accomplishments Vertiflite, 1988, 34 (06): : 64 - 68
- [9] NASA subsonic jet transport noise reduction research AERONAUTICAL JOURNAL, 2000, 104 (1038): : 353 - 358
- [10] An overview of NASA's laser risk reduction program IGARSS 2004: IEEE INTERNATIONAL GEOSCIENCE AND REMOTE SENSING SYMPOSIUM PROCEEDINGS, VOLS 1-7: SCIENCE FOR SOCIETY: EXPLORING AND MANAGING A CHANGING PLANET, 2004, : 679 - 682