Abstract
Non-vocal communication resource book. Ed. Gregg C. Vanderhiden
The application of Signal Processing Concepts to Hearing Aids by Yanick, P. and Freifeld, S. (editors)
C. R. Smith and A. Karp: A workbook in auditory training, (ix-103). Charles C. Thomas
The Essentials of Clinical Electric Response Audiometry (ERA), W. P. R. Gibson