Ertur, C.; Musolesi, A. - Laboratoire d'Économie Appliquée de Grenoble, … - 2013
This paper provides an econometric examination of geographic R&D spillovers among countries by focusing on the issue of cross-sectional dependence. By applying several unit root tests, we first show that when the number of lags of the autoregressive component of augmented Dickey Fuller test-type...