1. Imperfect competition theory and basing point problems;Clarke;American Economic Review,1943
2. Comparative advantage, trade and payments in a Ricardian model with a continuum of goods;Dornbusch;American Economic Review,1977
3. Oligopoly and the theory of games;Friedman,1977
4. On the economics of intra-industry trade: Symposium;Giersch,1979
5. Intra-industry trade;Grudel,1975