7National Economic Council, Council of Economic Advisers and Office of Science and Technology Policy. A strategy for A- merican innovation-securing our economic growth and prospe- rity [R]. Washington : The White House,2011.
8Edward B Roberts, Denis E Malone. Policies and structures for spinning off new companies from research and development organizations [J]. Working Paper, 1995 (3) : 1-31.
9Henry Etzkowitz. The norms of entrepreneurial science :cognitive effects of the new university-industry linkages [J]. Research Policy, 1998 ( 27 ) : 823- 833.
10Yusuf S. Intermediating knowledge exchange between uni- versities and business [J]. Research Policy, 2008,37 ( 8 ) : 1167-1174.
