PaulsM. and HardyW. “Hearing Impairment in Preschool Age Children.” Laryngoscope. June1953.
2.
MyklebustHelmer. “The Use of Individual Hearing Aids in a Residential School for the Deaf with Implications for Acoustic Training.” Am. Annals of the Deaf. Sept.1946.
3.
HopkinsL. and HudginsC. “The Relationship between Degree of Deafness and Response to Acoustic Training Experiment.” Volta Review. Jan.1953.