格式给出参考文献。

  1. Anderson, J. E., & Van Wincoop, E. (2019). Gravity in international trade: A survey. Handbook of International Economics, 5, 197-261. doi:10.1016/bs.hie.2018.10.002

  2. Egger, P., & Larch, M. (2017). The gravity of global value chains. Journal of International Economics, 108, 1-19. doi:10.1016/j.jinteco.2017.01.007

  3. Head, K., Mayer, T., & Ries, J. (2017). The erosion of colonial trade linkages after independence. Journal of International Economics, 107, 43-63. doi:10.1016/j.jinteco.2017.01.001

  4. Helpman, E., & Melitz, M. J. (2017). Trade and inequality: From theory to estimation. Review of Economic Studies, 84(1), 357-381. doi:10.1093/restud/rdw033


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