Lööf, Hans; Johansson, Börje - Centre of Excellence for Science and Innovation … - 2013
This paper studies the influence of metropolitan externalities on productivity for different types of long run R … generates three distinct results. First, the productivity premium associated with persistent R&D is close to 8 percent in non … external milieu in metro areas. Third, no productivity premium is associated with occasional R&D effort regardless of the firm …