Castellacci, Fulvio; Grodal, Stine; Mendonca, Sandro; … - Volkswirtschaftliche Fakultät, … - 2005
main strands of research, studying innovation at the organisational, systemic, sectoral and macroeconomic levels. Then …, considering the field as a whole, the article points to the existence of important neglected topics and methodological challenges … for future research. In fact, several fundamental issues are still unexplored, such as the co-evolution between …