1. Television Exposure: Programs Vs. Advertising;Avery Abernethy;Journal of Current Issues and Research in Advertising,1990
2. Photographing the TV Audience;Charles Allen;Journal of Advertising Research,1965
3. Bernoff, Josh (2006), "Toward DVR Ubiquity: DVR Penetration Will Top 50% and Spread Throughout the Home," report, Forrester, Inc., available at www.forrester.com