6Hyun - Woo Park, Sang - Hyuk Suh. Scientific and Technological Knowledge Flow and Technological Innovation: Quantitative Approach Using Patent Citation [ J ]. Asian Journal of Technology Innovation. 2013, 21(1) : 153-169.
7Day R H. The Technology Evolving Culture: Character and Conse- quence [ J ]. Journal of Evolutionary Economics, 2008, lg ( 3 ) : 313 - 322.