4Keller W.How trade patterns and technology flowsaffect productivity growth[R].NBER Working Paper,1999.6990.
5Keller W.International technology difussion[R].NBER Working Paper,2001.8573.
6Marwah K,Tavakoli A.The effect of foreign capital and imports on economic growth:further evidence from four Asian countries (1970～1998)[J].Journal of Asian Economics,2004,15:399-413.
7Lee J W.Capital goods imports and long-run growth[J].Journal of Development Economics,1995,48:91-110.
8Grossman G,Helpman E.Innovation and growth in the global economy[M].Cambridge,MA:MIT Press,1991.
9Rivera-Batiz L,Romer P.Economic integration and endogenous growth[J].Quarterly Journal of Economics,1991,106:531-556.
10Xu,Wang.Capital goods trade and R&D spillovers in the OECD[J].The Canadian Journal of Economics,1999,5:1258-1274.
