1. Noise due to air-ejection from clash surfaces of impact forming machines;Trengrouse,1973
2. Billet expansion as a mechanism for noise production in impact forming machines;Hodgson;J. Sound and Vib.,1975
3. Noise reduction in HERF cropping machine;Droubi,1974
4. Statistical analysis of the influence of process variables on noise generation in impact hot forming;Vajpayee,1979
5. The attenuation of audible sound in fog and smoke;Knudson;J. Acoustical Soc. of America,1948