Lööf, Hans; Heshmati, Almas - 2001 - First Version May 2001, Revised October 2001, March 2002, December 2002
the same data sources, an identical model but different data sources, different classifications of firm performance and …The objective of this study is to investigate the sensitivity of the estimated relationship between innovation and firm … performance. In doing so, we rely on a knowledge production function approach and carry out comparisons in a number of respects …