1. Economic Welfare and the Allocation of Resources for Invention. The Rate and Direction of Inventive Activity;Arrow,1962
2. Value-based business strategy;Brandenburger;Journal of Economics and Management Strategy,1996
3. Protecting their Intellectual Assets Appropriability Conditions and Why U.S. Manufacturing Firms Patent (or not);Cohen,2004
4. Uncertainty, industrial structure, and the speed of R&D;Dasgupta;The Bell Journal of Economics,1980
5. The private and social value of information and the reward to inventive activity;Hirshleifer;American Economic Review,1971