Bakshy, Eytan, Matthew Simmons, David Huffaker, Chun-Yuen Cheng, and Lada Adamic. “The Social Dynamics of Economic Activity in a Virtual World”. Proceedings of the International AAAI Conference on Web and Social Media 4, no. 1 (May 16, 2010): 2–9. Accessed May 25, 2026. https://ojs.aaai.org/index.php/ICWSM/article/view/14032.