1. A road surface for reduction of tire noise emission;Sandberg;Inter-Noise '79,1979
2. Motorway noise reduction by covering grooved concrete with open graded rubberized asphalt;Brabander;Inter-Noise '83,1983
3. Acoustical experiences with open graded asphalt concrete road surface in Federal Republic of Germany;Ullich;Inter-Noise '88,1988
4. Outside vehicle noise and surface characteristics;Lucquiaud;Inter-Noise '88,1988
5. Acoustically optimized porous road surface — Recent experiences and new development;Meier;Inter-Noise '88,1988