1. A Profile of Older Americans. American Association of Retired Persons (AARP), 1985.
2. Hearing loss and the primary-care MD: Bridging the information gap;Bebout;Hear J,1986
3. Berger K: Enter the transistor. In Berger K (ed): The Hearing Aid: Its Operation and Development, ed 3, The National Hearing Aid Society, 1984.
4. Berger K, Hagberg H: Prescription of hearing aids: Rationale, procedures, and results. Kent State University Speech and Hearing Clinic Report, Kent, Ohio, 1977.
5. Cochlear implants: 1981-1985;Berliner;Am J Otol,1985