Using a novel common econometric specification, we examine the measurement of three important effects in international trade that historically have been addressed largely separately: the (partial) effects on trade of economic integration agreements, national borders, and bilateral distance....

Using six years of firm-level data covering 224 regions of the enlarged European Union, we evaluate the importance to a firm of locating its activities (production, headquarters, R&D, logistics and sales) close together. We find that, after controlling for regional characteristics, being closely...

This paper estimates a theory-guided gravity equation of regional patient ows. In our model, a patient's choice to consult a physician in a particular region depends on a measure of spatial accessibility that accounts for the exact locations of both patients and physicians. Introducing this...

This paper estimates a theory-guided gravity equation of regional patient flows. In our model, a patient's choice to consult a physician in a particular region depends on a measure of spatial accessibility that accounts for the exact locations of both patients and physicians. Introducing this...

This paper estimates a theory-guided gravity equation of regional patient flows. In our model, a patient’s choice to consult a physician in a particular region depends on a measure of spatial accessibility that accounts for the exact locations of both patients and physicians. Introducing this...

This paper examines how the geographical proximity of university-industry linkages relates to the quality of an institution's research, local efforts in research and development (R&D), and characteristics of a region's production structure. The important role of universities for the firms'...

Gravity models are extremely popular to investigate economic interactions across space. Bilateral ows are usually available as regionally aggregated data only, while information on demand and supply is often available at a finer spatial scale. We suggest using this information to calculate a...