1. Trends in developing country exports, 1963-88;Balassa,1990
2. Import competition from developing countries;Grossman;Review of Economics and Statistics,1982
3. International Monetary Fund, International Financial Statistics (Washington DC: IMF various issues).
4. World trade and output of manufactures: Structural trends and developing countries' exports;Keesing,1979
5. Foreign Trade Regimes and Economic Development: Liberalization Attempts and Consequences;Krueger,1978