Medda, Giuseppe; Piga, Claudio; Siegel, Donald - 2003
Productivity (TFP). Thus, this paper answers the call for more research on the links between a firm's external R&D and its … between R&D expenditures and productivity growth. The analysis considers the different contributions of various forms of R …&D (product, process, internal, external in collaboration with universities, research centres and other firms) to Total Factor …