1. Openness, country size and government;Alesina;Journal of Public Economics,1998
2. Gravity with gravitas: A solution to the border problem;Anderson;American Economic Review,2003
3. Trade costs;Anderson;Journal of Economic Literature,2004
4. Baier, S., Bergstrand, J., 2006. Bonus vetus OLS: A simple approach for addressing the ‘border puzzle’ and other gravity-equation issues. Working paper.
5. Economic growth in a cross section of countries;Barro;Quarterly Journal of Economics,1991