2IEC 60118-4. Hearing Aids-Part 4. Magnetic Field Strength in Audio-frequency Induction Loops for Hearing Aid Purposes. Amendment 1 (1998).1981.
3EHIMA GSM project, final report. Heating Aids and GSM Mobile Telephones: Interference. 1995. Problems,Methods of Measurement and Levels of Immunity.
4EU ISIS programme project. Hearing Aids and Mobile Phones Immunity and Interference StandardsHAMPIIS, Available from EHIMA, Brussels. 1999.
5ANSI C63.19. American National Standard for Methods of Measurement of Compatibility Between Wireless Communications Devices and Hearing Aids.2001.
6NAL report No. 131. Interference to Hearing Aids by the Digital Mobile Telephone System, Global System for Mobile Communications, (GSM).National Acoustic Laboratories, Australia. 1995.
