This paper looks at a hitherto neglected extensive margin of international trade by investigating for the first time the frequency at which German exporters and importers trade a given good with a given country. Imports and exports show a high degree of lumpiness. In a given year about half of...

This note uses comparable representative data for manufacturing firms from five European countries (Germany, France, Italy, Spain, and the United Kingdom) to investigate the links between firm age and the participation of the firms in export, the share of exports in total sales, the number of...

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

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...