A relatively frequent problem when cross-classified data is needed (for example region <InlineEquation ID="IEq1"> <EquationSource Format="TEX">$$\times $$</EquationSource> <EquationSource Format="MATHML"> <math xmlns:xlink="http://www.w3.org/1999/xlink"> <mo>×</mo> </math> </EquationSource> </InlineEquation> industry) is that only aggregate (not cross-classified) data exists. Filling the gaps by combining data from diverse sources usually requires data conciliation. Ecological inference and...</equationsource></equationsource></inlineequation>

Recent developments in spatial econometrics have been devoted to spatio-temporal data and how spatial panel data structure should be modeled. Little effort has been devoted to the way one must deal with spatial data pooled over time. This paper presents the characteristics of spatial data pooled...