1. Health and Safety Requirements for the Working Environments Affected by Noise, Maximum Noise Limits for the Working Environments and the Noise Measurement Procedure, Government of the Estonian Republic regulation, No. 108 of 12 Apr 2007. [in Estonian]
2. MIL-STD-1474E Noise Limits, Design Criteria Standard, Department of Defense, 15 Apr 2015
3. A. Collée, C. Legrand, B. Govaerts, P. Van Der Veken, F. De Boodt, E. Degrave, Occupational exposure to noise and the prevalence of hearing loss in Belgian military population: a cross-sectional study. Noise Health 13(50), 64–70 (2011)
4. R. Mrena, S. Savolainen, U. Pirvola, J. Ylikoski, Characteristics of acute acoustical trauma in the Finnish Defence Forces. Int. J. Audiol. 43(3), 177–181 (2004)
5. P. Muhr, Hearing in young men: the influence of military noise and epidemiological aspects, Karolinska Institutet (Stockholm, Sweden, 2010)