Interactions between firms, universities, and research organizations are crucial for successful innovation in the modern knowledge-based economy. Systems of such interactions constitute R&D networks. R&D networks may be meaningful segmented using recent methods for identifying communities,...

The focus in this article is on knowledge spillovers between high-technology firms in Europe, as captured by patent citations. The European coverage is given by patent applications at the European Patent Office that are assigned to high technology firms located in the EU-25 member states (except...

Basiskonzepte und Indikatoren zur Erfassung von Wissen und Wissensspillovers -- Europäische High-Tech Patente und Patentzitierungen — Eine explorative Analyse -- Europäische High-Tech Patentzitierungen — Eine explanatorische Analyse -- Zusammenfassung und Ausblick.