1. 1) Environment Agency, “Environmental Quality Standard for Aircraft Noise” (1973) (in Japanese).
2. 2) “International Standards and Recommended Practices,” ENVIRONMENTAL PROTECTION, ANNEX 16, First Edition (1971).
3. 3) “Integrated Noise Model (INM),” Version 1 User’s Guide, FAA (1978).
4. 4) “Prediction method for lateral attenuation of airplane noise during takeoff and landing,” SAE-AIR-1751, March (1981) (reaffirmed March 1991).
5. 5) H. Tachibana, “Recent movement of administration for environmental noise problem in Japan,” DEGA-ASJ Symposium March (2000).