1. The Economics of Industrial Innovation;Freeman,1982
2. Invention and Economic Growth;Schmookler,1966
3. Business Cycles: A Theoretical, Historical and Statistical Analysis of the Capitalist Process;Schumpeter,1939
4. Organizational factors in R and D and technological changes: market failure considerations;Phillips,1980
5. Technical paradigms and technological trajectories — a suggested interpretation of the determinants and directions of technical change;Dosi;Research Policy,1982