1. Reexamen de la définition et de la mesure des échanges croisés de produits similaires entre les nations;Abd-El-Rahman,1985
2. Intra-industry trade and intra-industry specialization as concurrent sources of international trade in manufactures;Aquino;Weltwirtschaftliches Archiv,1978
3. Tariff reductions and trade in manufactures among industrial countries;Balassa;American Economic Review,1966
4. Trade liberalization among industrial countries: Objectives and alternatives;Balassa,1967
5. European economic integration, ch. 2;Balassa,1975