This paper investigates the relationship between market potential and the spatial variation in the number and the average size of firms. We adapt the canonical model of the New Economic Geography to demonstrate this relationship and to derive an empirical specification suitable for estimation...

We propose aggregation indices of Non-Tariff Measures (NTMs) to quantify their protectionism relative to international standards of stringency. We apply the indices to national Maximum Residue Limit (MRL) regulations on pesticides and veterinary drugs affecting agricultural and food trade and...