References
- A.S.A. Report Z-24-X-2, The relation of hearing loss to noise exposure. 1954
- Beasley W. C. National Health Survey, 1938; data quoted from: Sunderman, F. W. and Boerner, F. Normal Values in Clinical Medicine. 1949, Philadelphia
- Corso J. F. Age and sex differences in pure-tone thresholds; Arch. Otolaryng 1963; 77: 385
- Dadson R. S., King J. H. A determination of the normal threshold of hearing and its relation to the standarization of audiometers, J. Laryng. and Otolaryng 1952; 66: 366
- Glorig A., Nixon J. Hearing loss as a function of age, Laryngoscope 1962; 72: 1596
- Glorig A. E. A. Wisconsin State Fair Hearing Survey. American Academy of Ophthalmology and Otolaryngology, 1957
- Hinchcliffe R. Acustica 1959; 9: 303, Threshold of hearing as a function of age
- 1964, ISO Recommandation R 389, Standard reference zero for the calibration of audiometers
- Jatho K., Heck K. H. Schwellen audiometrische Untersuchungen über die Progre-dienz und Charakteristik der Alterschwerhörigkeit in den verschiedenen Lebensabschnitten, Zeitschr. Laryng. 1959; 38: 72
- Johansen H. Den Aldersbetingede Tunghørhed. København, Munksgaard 1943
- Wheeler L. J., Dickson E. D. D. The determination of the threshold of hearing, J. Laryng. and Otolaryng 1952; 66: 379