1. Cournot Competition Yields Spatial Agglomeration;S P Anderson;International Economic Review,1991
2. Leapfrogging in International Competition: A Theory of Cycles in National Technology Leadership;E S Brezis;American Economic Review,1993
3. Vertical Product Differentiation and North-South Trade;H Flam;American Economic Review,1987
4. Pre-emptive Patenting and the Persistence of Monopoly;R J Gilbert;American Economic Review,1982
5. Skilled Labour and the Choice of Technique in Edwardian Industry;C K Harley;Explorations in Economic History,1974