Trusov, Michael; Bucklin, Randolph E; Pauwels, Koen (2009). Effects of Word-of-Mouth Versus Traditional Marketing: Findings from an Internet Social Networking Site. Journal of Marketing, 73(5), 90–102.
doi:10.1509/jmkg.73.5.90
url to share this paper:
An interview with Sci-Hub Founder Alexandra Elbakyan Who exactly should pay for academic research