1. Albu, M. (1996). Technological learning and innovation in industrial clusters in the south. Electronic working paper 7. UK: University of Sussex.
2. Allen, R. C. (1983). Collective invention. Journal of Economic Behavior & Organization, 4, 1–24.
3. Allen, T. J., Hyman, D. B., & Pinckney, D. L. (1983). Transferring technology to the small manufacturing firm: A study of technology transfer in three countries. Research Policy, 12(4), 199–211.
4. Bala Subrahmanya, M. H., Mathirajan, M., Balachandra, P., Srinivasan, M. N., & Prasad, L. (2002). R&D and technological institutions in small scale industries. New Delhi: Allied Publishers.
5. Bala, V., & Goyal, S. (1998). Learning from neighbours. Review of Economic Studies, 65, 595–621.