4Shefer, D, Frenkel, A. R&D, firm size and innovation: an empirical analysis[ J ]. Technovation, 2005, 25 ( 1 ) : 25 - 32.
5David P, O' Brien J P, Yoshikawa T. The implications of debt heterogeneity for R&D investment and firm performance [J]. Academy of Management Journal, 2008, 51 ( 1 ) :165 - 181.
6Le, T V, O' Brien, J P. Can twowrongs make a right? State ownership and debt in a transition economy [ J ]. Journal of Management Studies, 2010, 47(7) : 1297 - 1316.
7Ortega- Argiles, R, Moreno, R, Caralt, J S. Ownership structure and innovation: Is there a real link? [ J]. Annals of Regional Science, 2005, 39(4) : 637 -662.
8Czarnitzki, D, Kraft, K. Capital eontrel, debt financing and innovative activity[ J]. Journal Of Economic Behavior & Or- ganization, 2009, 71(2): 372-383.
9Wu, J F, Xu, D A, Phan, P H. The effectsof ownership concentration and corporate debt on corporate divestitures in Chinese listed firms[ J]. Asia Pacific Journal of Management, 2011, 28(1) : 95 - 114.
10Wang, T Y, Thornhill, S. R&D investment and financing choices : A comprehensive perspective [ J ]. Research Policy, 2010, 39(9) : 1148 -1159.
