There is growing evidence that firms increasingly adopt open innovation practices. In this paper we investigate the impact of two such external knowledge acquisition strategies, "buy" and "cooperate", on firm's product innovation performance. Taking a direct (productivity) approach, we test for...

In a first step, we developed based on existing theoretical and empirical literature a series of hypotheses with respect to the relative importance of possible determinants of exploration and exploitation of knowledge in collaboration with universities and tested them on Swiss firm data. In a...