Preference for variety on behalf of consumers suggests that variety in supply is a pertinent characteristic of individual firms. This paper studies the relationship between export variety and exports on a cross-section of exporting firms in Sweden. Multi-product firms, i.e., firms which export a...

Do agglomerations stimulate productivity? An extensive literature on agglomeration economies, or urban increasing returns, has analyzed this question with aggregated spatial data. This paper estimates the relationship between agglomeration and productivity at the firm level using static and...