1. Almeida, P. and Kogut, B. (1999). Localization of knowledge and the mobility of engineers in regional networks. Management Science, 45(7): 905–917
2. Allen, T. J. (1977). Managing the Flow of Technology: Technology Transfer and the Dissemination of Technological Information Within the R&D Organization. MIT Press, Cambridge.
3. Arman, H. and Foden, J. (2010). Combining methods in the technology intelligence process: application in an aerospace manufacturing firm. R & D Management, 40(2): 181–194.
4. Asheim, B. T. and Gertler, M. (2005). The Geography of Innovation: Regional Innovation Systems. In Fagerberg, J., Mowery, D. and Nelson, R. (eds.), The Oxford Handbook of Innovation. Oxford University Press, Oxford.
5. Audretsch, D. B., and Feldman, M. P. (1996). R&D spillovers and the geography of innovation and production. The American Economic Review, 86(3): 630–640.