6GENTRY W, HUBBARD R G. Tax policy and entry into entrepreneurship [C]. The American Economic Review, 2004:283-287.
7GUELLEC D, VAN POTTELSBERGHE. The Impact of Public R&D Expenditure on Business R&D [ M ]. Economics of Innovation and New Technology , 2000 : 225 - 243.
8VALENTE S. Tax Policy and Human Capital Formation with Public Investment in Education [ C]. WIF Working Paper, 2005.
9CULLEN J B, GORDON R H. Taxes and Entrepreneurial Activity: Theory and Evidence for the U.S. [ C ]. NBER Working Paper No. 9015, 2002.
10DAGENAIS M, MOHNEN P , THERRIEN E Do Canadian Firms Respond to Fiseal Incentives to Research and Development? [ C]. Centre inter universitaire de recherche en analyse des organisations- CIRANO, 1997: 34-97.