Ritical evaluation of the 3 school of thought on innovation is services:

– COOMBS, R. & MILES, I. (2000) Innovation, measurement and services: The new problematique. IN METCALFE, J. S. & MILES, I. (Eds.) Innovation systems in the service economy. Boston, Kluwer.
– GALLOUJ, F. & WEINSTEIN, O. (1997) Innovation in services. Re