1. Export development policies and achievements;Athukorala;Economic Review (Colombo),1984
2. Effective protection in developing countries;Balassa,1971
3. Central Bank of Sri Lanka, Review of the Economy (Colombo: Central Bank of Sri Lanka, various issues).
4. Who pays for protection in Australia;Choi;The Economic Record,1986
5. How Protection Taxes Exporters;Clements,1984