Optimal Mechanism Design with Referral

The authors thank Mikhail Drugov, Jeffrey Ely, Isa Hafalir, Seungwon (Eugene) Jeong, Simon Loertscher, Onur Kesten, Xianwen Shi, Kentaro Tomoeda, Jun Xiao, Xin Zhao, and seminar participants at University of Melbourne, University of Technology Sydney, Shanghai University of Finance and Economics, and 2022 Australasia Meeting of the Econometric Society for helpful comments. H. Zhou and J. Zhang are co-first authors and contributed equally to the article.