1. Field measurement of infrasonic noise;Hood;Acustica,1971
2. Low frequency sound measurement in vehicles;Tempest;Applied Acoustics,1972
3. Some effects of infrasonic noise in transportation;Evans;Journal of Sound and Vibration,1972
4. Infrasonic mesaurements;Bruel;B & K Technical Review No. 3,1973
5. A simple frequencymodulation tape recorder;Tempest;Electronic Engineering,1967