1. Digital hearing aid terminology made simple: a handy glossary;Agnew;The Hearing Journal,2000
2. Amplifiers and circuit algorithms for contemporary hearing aids;Agnew,2002
3. American National Standard: Testing Hearing Aids with a Broad-band Noise Signal;American National Standards Institute,1992
4. Hearing in pop musicians;Axelsson;Acta Otolaryngologica,1978
5. Hearing in classical musicians;Axelsson;Acta Otolaryngologica,1981