1. Economic welfare the allocation of resources for invention;Arrow,1962
2. Strategic R & D policy;Beath;Economic Journal (Conference Papers),1989
3. The theory of externalities, public goods and club goods;Comes,1986
4. Patents, priority and imitation or, the economics of races and waiting games;Dasguptau;Economic Journal,1988
5. Uncertainty, industrial structure and the speed of R & D;Dasgupta;Bell Journal of Economics and Management Science,1980