<title>Abstract</title> In this editorial we summarize and comment on the papers published in issue 7.2. The papers reviewed are ‘Informal Sector and Manufacturing Location: In Search of the Missing Links’ by Michiel Gerritse & Ana Moreno-Monroy; ‘Testing for Unit Roots and Cointegration in Spatial...

<title>Abstract</title> In this editorial we summarize and comment on papers published in issue 7.1. This is a themed issue, with four of the papers being originally presented at the 9th International Workshop in Spatial Statistics and Econometrics held at the University of Orléans, France. This was organized...

<title>Abstract</title> With its German, French, Italian, and Romansch Cantons, the Helvetic Federation is a small-scale version of the cultural, social, religious, and linguistic heterogeneities found in the European Union (EU). Although it is an interesting case study for observing the effects of...

<title>Abstract</title> This paper investigates the quasi-maximum likelihood estimation of spatial dynamic panel data models where spatial weights matrices can be time varying. We find that QML estimate is consistent and asymptotically normal. We investigate marginal impacts of explanatory variables in this...

<title>Abstract</title> Although the informal sector is very large and unevenly distributed within developing countries, its relative size and location have not been investigated from the perspective of location models. This paper builds a modified Core--Periphery model where formal and informal firms compete...

<title>Abstract</title> Spatial impulses are derived for SAR models containing a spatial unit root. Analytical solutions are obtained for lateral space where the number of spatial units tends to infinity. Numerical solutions are obtained for finite regular lattices where edge-effects are shown to influence...

<title>ABSTRACT</title> This paper analyses the location of foreign direct investment across the regions of Great Britain over 1985--2005 using the framework of discretized Markov chains. FDI is measured according to the regional share of inward investment projects, where a distinction is made between...

<title>Abstract</title> We investigate the relative impact of geographic features on the location of production in the European Union. Specifically, we attempt to quantify how much of the spatial pattern of GDP can be attributed to exogenous first-nature elements alone and how much can be derived from...

<title>Abstract</title> This paper first reflects on the concentration invariance property that regional economics implicitly assumes when the locational Gini index and the generalized entropy family of concentration indexes are used. Second, it suggests that apart from these indexes, concentration measures...

<title>Abstract</title> It has been demonstrated recently that in small-to-medium samples the empirical significance levels of the asymptotic J-type tests for the SARAR model introduced by Kelejian (2008) can be controlled in many cases by the use of a bootstrap to construct a reference distribution. A feature...