This paper investigates the extent to which the gap in total factor productivity between small and large firms is due to differences in the endowment of factors determining productivity and to the returns associated with these factors. We place particular emphasis on the contribution of...

This paper investigates the role of external knowledge in the patenting activity of inventors that work inside firms, i.e. industrial inventors. It does so with the aim of showing that inventors who combine the use of different sources of knowledge, i.e. scientific and market sources, display a...