Gjerde, Øystein; Knivsflå, Kjell; Sættem, Frode - In: Managerial and Decision Economics 31 (2010) 4, pp. 277-301
This article analyzes the value-relevance of industry-based and resource-based competitive advantage in a large sample of firms listed on the Oslo Stock Exchange. We measure competitive advantage by a single variable and perform a new decomposition into its underlying sources. In 1986-2005, the...