1. Innovation in large and small firms: an empirical analysis;Acs;American Economic Review,1988
2. Arrow, K., 1962. Economic welfare and the allocation of resources for invention. In: Nelson, R.E. (Ed.), The Rate and Direction of Inventive Activity. Princeton University Press, Princeton, pp. 609–619.
3. Baldwin, W.L., Scott, J.T., 1987. Market Structure and Technological Change. Harwood Academic Publishers, Chur.
4. Bound, J., Cummins, C., Griliches, Z., Hall, B.H., Jaffe, A.B., 1984. Who does R&D and who patents? In: Griliches, Z. (Ed.), R&D, Patents and Productivity. Chicago University Press, Chicago, pp. 21–54.
5. Economies of density versus economies of scale: why trunk and local service airline costs differ;Caves;RAND Journal of Economics,1984