1. Vibration and sound;Morse,1991
2. Handbook of acoustical measurements and noise control;Harris,1998
3. The “hum” is back, Echoes, Rossing T, editor. 2002;12(3):5.
4. The effects of low frequency noise on people—a review;Broner;Journal of Sound and Vibration,1978
5. Correlation of naturally occurring infrasonics and selected human behavior;Green;Journal of Acoustical Society of America,1968