: Exploring the Knowledge Base' -- Ben R. Martin (2013), 'Innovation Studies: An Emerging Agenda' -- Eric von Hippel (2005 … Reinhilde Veugelers (2006), 'In Search of Complementarity in Innovation Strategy: Internal R&D and External Knowledge … Acquisition' -- Morten Berg Jensen, Björn Johnson, Edward Lorenz and Bengt Åke Lundvall (2007), 'Forms of Knowledge and Modes of …