1. Differences Between Advertising and Program Exposure for Car Radio Listening;Abernethy;Journal of Advertising Research,1991
2. Quantifying Equilibrium Network Externalities in the ACH Banking Industry;Ackerberg;RAND Journal of Economics,2006
3. Arbitron Company and Edison Media Research. “Will Your Audience Be Right Back After These Messages?” Available on-line at http://www.edisonresearch.com/home/archives/spotload699.pdf, 1999 (accessed August 2009).
4. Arbitron Company and Edison Media Research. “The National In-Car Study: Fighting for the Front Seat.” Available on-line at http://www.arbitron.com/downloads/InCarStudy2003.pdf, 2003 (accessed August 2009).