In endogenous growth theory models have either increasing or constant ranges of product variety. Developments in modem biotechnology however show cases of increasing, decreasing or constant ranges of product variants. We present a simple endogenous growth model allowing for all of these three...

This paper focuses on the diffusion of knowledge intensive business services (KIBS) in relation to information and communication technology-based innovations and their effect on productivity growth. Intermediate purchases of KIBS by any other industry determine the extent of KIBS diffusion. This...