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...

Empirische Befunde zeigen, dass exportierende niedersächsische Industriebetriebe produktiver als vergleichbare nicht exportierende Betriebe sind, wobei diese Unterschiede bereits vor dem Exportstart bestehen (also eine Selbstselektion der produktiveren Betriebe auf Exportmärkte stattfindet),...

Using a knowledge production framework and a rich set of plant level data this study demonstrates that in Germany firms that are active on international markets as exporters or foreign direct investors do generate more new knowledge than firms which sell on the national market only. These...