2R. Capello(1999), "Spatial transfer of knowledge in high technology milieu: learning versus collective learning processes", Regional Studies, 33(4).
3C. de Bresson (1999), "An entrepreneur cannot innovate alone; Networks of enterprises are required", Presentato AUa DRUID Conference on Systems of Innovation, Denmark.
4C. Edquist(1997), "Institutions and organizations in systems of innovation: the state of the art", working paper, Linkoping University, Sweden.
5Hart & Simmie(1997) "Innovation, competition and the structure of local production networks", Local Economy, Nov.
6M.E.Porter(1998), "Clusters and the new economics of competition", Harvard Business Review, Nov. - Dec.
