9Antonelli, C. 1998. Localised technological change, new information technology and the knowledge-based economy: the European evidence, Journal of Evolutionary Economics, vol. 8:177 - 198.
10Den Hertog and Bilderbeek, R. 1998. Innovation in and through knowledge intensive business services in the Netherlands,TNO - report STB/90/03, TNO/STB 1997.