Harhoff, Dietmar MPI for Innovation and Competition, Max Planck Society;
https://www.e-fi.de/fileadmin/Gutachten_2015/EFI_Report_2015.pdf (Publisher version)
https://www.e-fi.de/fileadmin/Gutachten_2015/EFI_Gutachten_2015.pdf (Publisher version)
Backes-Gellner, U., Böhringer, C., Foray, D., Harhoff, D., Ott, I., & Schnitzer, M. (2015). Report - Research, Innovation and Technological Performance. Berlin: EFI.