【作者(必填)】Treb Allen
Dartmouth College and National Bureau of Economic Research

Costas Arkolakis
Yale University and National Bureau of Economic Research

Yuta Takahashi
Hitotsubashi University

【文题(必填)】Universal Gravity

【年份(必填)】2020

【全文链接或数据库名称(选填)】https://www.journals.uchicago.edu/doi/pdfplus/10.1086/704385
期刊版，谢谢了！