1. Ithell, A.: A determination of the acoustical input impedance characteristics of human ears. Acustica 13, 311 (1963)
2. Ithell, A., Johnson, E., Yates, R.: The acoustical impedance of human ears and a new artificial ear. Acustica 15, 109 (1965)
3. İTP (2016), T.C. SAĞLIK BAKANLIGI, Türkiye HalkSağlığı Kurumu, TÜRKİYE ULUSALİŞİTME TARAMA PROGRAMI (İTP) Kullanım Kılavuzu(V1.0) 2013 02 15 http://isitmetarama.saglik.gov.tr/
4. Otoport Lite User Manual: Otodynamics Issue C3 Otoport Lite v3.24.1.0 onwards Doc Ref: MANOLC-03, January 2013 (2013)
5. Barham, R., Rasmussen, K., Fedtke, T., Rodrigues, D., Zmierczak, T.: Measurement of the acoustical impedance of artificial ears. A report on EURAMET Project 791 2008, NPL REPORT AC 6 (2008)