Harhoff, Dietmar MPI for Innovation and Competition, Max Planck Society;
https://www.e-fi.de/fileadmin/Gutachten_2014/EFI_Report_2014.pdf (Publisher version)
https://www.e-fi.de/fileadmin/Gutachten_2014/EFI_Gutachten_2014.pdf (Publisher version)
Backes-Gellner, U., Böhringer, C., Foray, D., Gerybadze, A., Harhoff, D., & Schnitzer, M. (2014). Report - Research, Innovation and Technological Performance in Germany. Berlin: EFI.