V. M.]]A. de Peutz]]Bruijn,International Conference on Noise Control Engineering.International Conference on Noise Control Engineering (10th : 1981 : Amsterdam)：Inter-noise 81 : Practice of noise control engineering．V.1.Nederlands Akoestisch Genootchap,1981.
V. M.]]A. de Peutz]]Bruijn,International Conference on Noise Control Engineering.International Conference on Noise Control Engineering (10th : 1981 : Amsterdam)：Inter-noise 81 : Practice of noise control engineering．V.2.Nederlands Akoestisch Genootchap,1981.
