8Sandro Mendonca, Tiago Santos Pereira, Manuel Mira Godinho. Trademarks as an indicator of innovation and industrial change [ J ]. Research Policy, 2004, ( 33 ) : 1385 -1404.
9Samuel Kortum, Josh Lerner. Assessing the contribution of venture capital to innovation[ J]. Rand Journal of Eco- nomics ,2000, (31) :674 - 692.
10Ueda, Hirukawa. Venture capital and industrial "innova- tion" [ R ]. Working Paper, University of Wisconsin ,2008.