The data.zip file contains:
1) the explanatory variables used in the regression (files covariates1995.txt to covariates2006.txt);
2) the neighbours among the Italian regions (file neighbours.txt);
3) the geographical distance between the Italian regions (file geographical_distance.txt);
4) the migratory flows of the Italians (files migratory_flows_italians1995 to migratory_flows_italian2006)



N.B. The migratory flows of the resident foreigners cannot be shared because they were purchased from ISTAT (Italian National Institute of Statistics)