Theuvsen, Ludwig, Matthias Heyder, and Christoph Niederhut-Bollmann. “Does Strategic Group Membership Affect Firm Performance? An Analysis of the German Brewing Industry”. German Journal of Agricultural Economics 59, no. 2 (June 1, 2010). Accessed November 22, 2024. https://www.tib-op.org/ojs/index.php/gjae/article/view/1785.