Braakmann, Nils; Wagner, Joachim - In: Jahrbücher für Nationalökonomie und Statistik 231 (2011) 3, pp. 326-335
Summary We use unique rich data for German manufacturing enterprises to investigate the product diversification - firm performance relationship.We find that an increase in the degree of product diversification has a negative impact on profitability when observed and unobserved firm...