Naroditskiy, Victor, Sebastian Stein, Mirco Tonin, Long Tran-Thanh, Michael Vlassopoulos, and Nicholas Jennings. “Referral Incentives in Crowdfunding”. Proceedings of the AAAI Conference on Human Computation and Crowdsourcing 2, no. 1 (September 5, 2014): 171–183. Accessed May 13, 2026. https://ojs.aaai.org/index.php/HCOMP/article/view/13147.