1. Aggarwal , A. 2005 Performance of Export Processing Zones: A Comparative Analysis of India, Sri Lanka and Bangladesh
2. Gravity With Gravitas: A Solution to the Border Puzzle;Anderson;The American Economic Review,2003
3. Baldwin , R. D. Taglioni 2014 Gravity Chains: Estimating Bilateral Trade Flows When Parts and Components Trade Is Important Journal of Banking and Financial Economics 2 2 61 82