The present paper seeks to estimate how the impact of NTMs on trade can vary across export-import pairs by adopting a Heckman two-stage procedure of a gravity model that includes so-called comparative advantage variables. These variables consist of factor endowments of each trading partner and...

This paper investigates the relation between agglomeration and economic growth in Switzerland from 1860 to 2008. I use a new detailed data set on regional employment, value added and labor productivity for two geographical levels with 97 and 16 regions respectively. I provide a description of...