Raff, Horst; Wagner, Joachim - 2012 - This version: December 7, 2012
Feenstra and Ma (2008) develop a monopolistic competition model where firms choose their optimal product scope by … choices of product scope. In the model having a higher market share means that firms are hurt more by the "cannibalization … evidence is in line with the results from the theoretical model. -- multi-product firms ; productivity ; optimal product scope …