1. System de controle actif de bruit Lord NVX pour avions d'affaire Beechcraft Kingair, un concept devanu produit;Billout,1995
2. Models for evaluating the performance of propeller aircraft active noise control systems;Bullmore,1987
3. Anti-sound - the Essex breakthrough;Chaplin;Chartered Mech. Engineer,1983
4. Fighting noise with noise;Conover;Noise Control,1956