6Edquist C, Hommen L. Systems of innovation: Theory and policy for the demand side[J]. Technology in Society, 1999,21(1):63-79.
7Edler J, Georghiou L. Public procurement and innova- tion: Resurrecting the demand side[J]. Research Policy, 2007,36(7):949-963.
8Aschhoff B, Sofka W. Innovation on demand: Can pub- lic procurement drive market success of innova- tions?[J]. Research Policy, 2009,38(8):1235-1247.
9Kaiser R, Kripp M. Demand-orientation in national sys- tems of innovation: A critical review of current European innovation policy concepts[C]. London: DRUID Summer Conference on 'Opening Up Innovation: Strate- gy, Organization and Technology' at Imperial College London Business School, 2010.
10Edler J. Demand policies for innovation in EU CEE countries[D]. Manchester: Manchester Business School Research Paper, 2009.