While the question of the specification of spatial weight matrix is now largely discussed in the spatial econometrics literature, the definition of distance has attracted less attention. The choice of the distance measure is often glossed over, with the ultimate use of the Euclidean distance....

This paper assesses the robustness of the empirical results in Ertur and Koch (2007), who develop a model, which accounts for technological interdependence among countries through spatial externalities. The original version models interdependence via an interaction matrix based on geographic...

Geographic localization of knowledge spillovers is a central tenet in multiple streams of literature. However, empirical studies have examined this phenomenon for only one geographic unit - country, state or metropolitan area - at a time, and have also rarely accounted for spatial distance. We...

REVISED 9/2019: We show evidence of localized knowledge spillovers using a new database of multiple invention from U.S. patent interferences terminated between 1998 and 2014. Patent interferences resulted when two or more independent parties simultaneously submitted identical claims of invention...

This paper suggests genetic proximity, in addition to geographic proximity and imports, as a factor facilitating international knowledge transmission, where knowledge is measured as the stock of knowledge as well as research intensity to allow for the possibility that international knowledge...

In this paper the relationship between firm growth and external knowledge sources, such as related firms and universities, is studied. The spatial characteristics of these relationships are examined by geolocating firms into a more realistic relational space using travel time distances and using...