1. Epidemiological profile of hearing impairments: the scale and nature of the problem with special reference to the elderly;Davis;Acta Otolaryngol Suppl,1990
2. Longitudinal study of hearing;Davis;Acta Otolaryngol Suppl,1990
3. How the ear's works work;Hudspeth;Nature,1989
4. Audiologic assessment and amplification;Silverman;Prim Care,1998
5. Geriatric hearing loss. Understanding the causes and providing appropriate treatment;Marcincuk;Geriatrics,2002