Feenstra and Ma (2008) develop a monopolistic competition model where firms choose their optimal product scope by balancing the profits from a new variety against the costs of "cannibalizing" sales of existing varieties. While more productive firms always have a higher market share, there is no...

A stylized fact from the literature on the Micro-econometrics of International Trade and a central implication of the heterogeneous firm models from the New New Trade Theory is that exporters are more productive than non-exporters. It is argued that this exporter productivity premium is due to...

This note uses a tailor-made new data set to investigate for the first time the link between the quality of a firm's exports and the distance to destination countries for Germany. To anticipate the most important result, it is shown that the quality of exported goods and the distance to...

This note uses a new tailor-made data set to investigate the link between firm age and the extensive and intensive margins of exports empirically for the first time for Germany. Results turn out to be fully in line with the theoretical considerations. Older firms are more often exporters, export...

This paper uses a tailor-made newly available data set for enterprises from manufacturing industries in Germany to investigate for the first time the links between the extensive margins of imports (the number of imported goods and the number of countries imported from) and firm profitability....

This paper uses an approach recently suggested by Gabaix (Eonometrica 2011) to investigate for the first time the role of idiosyncratic shocks to the largest firms in the dynamics of imports by firms from manufacturing industries. For Germany we find evidence that imports are power-law...

This paper uses a new tailor-made data set to investigate the differences in extensive and intensive margins of exports in manufacturing firms from East Germany and West Germany. It documents that these margins do still differ in 2010, 20 years after the re-unification of Germany. West German...