1. The generalized theory of distortions and welfare;Bhagwati,1971
2. External economies of scale and competitive equilibrium;Chipman;Quarterly Journal of Economics,1970
3. Growth and welfare in a small, open economy;Eaton;University of Maryland, Department of Economics Working Paper 79-1,1978
4. Increasing returns to scale and international trade;Ethier,1978
5. The exact measurement of welfare losses which result from trade taxes;Helpman;International Economic Review,1978