Pak, Chankyung, and Rick Wash. “The Rich Get Richer? Limited Learning in Charitable Giving on donorschoose.Org”. Proceedings of the International AAAI Conference on Web and Social Media 11, no. 1 (May 3, 2017): 172-181. Accessed March 28, 2024. https://ojs.aaai.org/index.php/ICWSM/article/view/14868.