8Grossman, G., and E. Helpman, 1991, Innovation and Growth in the World Economy, Cambridge, MA. : MIT Press.
9Hakura, D. and F. Jaumotte, 1999, "The Role of Inter-and Intra-industry Trade in Technology Diffusion", IMF Working Paper 58.
10Jae Young Lee, 2003, "Channels of International Technology Diffusion: Evidence from South Korean Industries", dissertation of PHD of University of California. Irvine, 2003.
