1. Active noise control for compact acoustic plants;Pawełczyk;Gliwice: Jacek Skalmierski Computer Studio,1999
2. US Patent No;Bose;4,455,675,1984
3. Voice communications in the cockpit noise environment: the role of active noise reduction, PhD thesis;Wheeler,1986
4. Carme Ch. Absorption acoustique active dans les cavities. Doctoral thesis, Faculte des Sciences de Luminy, Universite D'Aix-Marseille, I. I., 1987.
5. Active control of noise and vibration;Hansen,1997