1. Sereda M, Xia J, El Refaie A, Hall DA, Hoare DJ. Sound therapy (using amplification devices and/or sound generators) for tinnitus. Cochrane Database Syst Rev. 2018;12(12):CD013094.
2. Tutaj L, Hoare DJ, Sereda M. Combined amplification and sound generation for tinnitus: a scoping review. Ear Hear. 2018;39(3):412–22.
3. Saltzman M, Ersner MS. A hearing aid for the relief of tinnitus aurium. Laryngoscope. 1947;57(5):358–66.
4. Vernon J. The use of masking for relief of tinnitus. In: Silverstein H, Norrell H, editors. Neurological surgery of the ear, vol. II. Birmingham: Aesculapius Publishing Co; 1976. p. 104–18.
5. Vernon J. Attemps to relieve tinnitus. J Am Audiol Soc. 1977;2(4):124–31.