1. Methods of measuring the attenuation of hearing protection devices;Berger;J. Acoust. Soc. Am.,1986
2. Field evaluation of ear muffs: Which is more suitable—insertion loss or transmission loss?;Pfretzschner;Appl. Acoust.,1988
3. Evaluation of uncertainties of sound attenuation measurements on hearing protectors;Brinkmann,1985
4. Nordic round-robin test on hearing-protector measurements;Poulsen,1985
5. A test facility for the objective measurements of circumaural hearing protector attenuation;Chillery,1982