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• Platform traps (with Andrei Hagiu)

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• Platform recommendations and disintermediation (with Andrei Hagiu and Chengsi Wang)

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• Personalization, data portability and competitive dynamics (with Andrei Hagiu)

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• ​Recommender systems and the value of user data (with Gunhaeng Lee)

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• The Dramatic Rise of the New Society Journals in Economics (with John Ham and Ziqiu Ye)  (Online Appendix)   Accepted at Economic Journal 

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