1. www.nhs.uk/conditions/hearing-loss/
2. Sharon G. Kujawa and M. Charles Liberman. Adding Insult to Injury: Cochlear Nerve Degeneration after “Temporary” Noise-Induced Hearing Loss, Journal of Neuroscience 11 November 2009, 29 (45) 14077-14085;
3. Deborah Imel Nelson, Robert Y. Nelson, Marisol Concha?Barrientos, Marilyn Fingerhut. The global burden of occupational noise?induced hearing loss. First published: 18 November 2005 American Journal of Industrial Medicine