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Innovative activity in wind and solar technology : empirical evidence on knowledge spillovers using patent data
Braun, Frauke G.; Schmidt-Ehmcke, Jens; Zloczysti, Petra - 2010
Persistent link: https://www.econbiz.de/10003994100
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R&D efficiency and barriers to entry : a two stage semi-parametric DEA approach
Cullmann, Astrid; Schmidt-Ehmcke, Jens; Zloczysti, Petra - 2010
Persistent link: https://www.econbiz.de/10008746937
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Industries at the world technology frontier : measuring R&D efficiency in a non-parametric DEA framework
Schmidt-Ehmcke, Jens; Zloczysti, Petra - 2011
Persistent link: https://www.econbiz.de/10009381723
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Procuring innovation
Cabral, Luís M. B.; Cozzi, Guido; Denicolò, Vincenzo; … - 2006
Persistent link: https://www.econbiz.de/10003367040