AER，JPE文章求助

求助AER（The American economic review ）文章如下
Selective Trials: A Principal-Agent Approach to Randomized Controlled Experiments
Copyright Research in the Digital Age: Moving from Piracy to the Supply of New Products
Is Wikipedia Biased?
Shifts in Privacy Concerns
Relational Contracts and the Value of Relationships


求助JPE（Journal of political economy）文章如下

Waiting to Imitate: On the Dynamic Pricing of Knowledge
Quitters Never Win: The (Adverse) Incentive Effects of Competing with Superstars
The Demarcation of Land and the Role of Coordinating Property Institutions
Factions and Political Competition

亲们靠你们了

Selective Trials: A Principal-Agent Approach to Randomized Controlled Experiments

Factions and Political Competition