1. MarkeTrak I: Introducing MarkeTrak: The consumer tracking survey of the hearing instruments market;Kochkin;Hear J,1990
2. MarkeTrak III identifies key factors in determining customer satisfaction;Kochkin;Hear J,1993
3. MarkeTrak VIII: 25-Year trends in the hearing health market;Kochkin;Hear Rev,2009
4. Increasing hearing aid adoption through multiple environmental listening utility;Kochkin;Hear J,2007
5. Customer satisfaction with hearing aids in the digital age;Kochkin;Hear J,2005