Gianni Betti is Full Professor in Statistics and Economics at the Department of Economics and Statistics, University of Siena, Italy. He has worked for several projects for the World Bank and European Commission, and has been closely involved with the development of the EU Statistics on Income and Living Conditions.
Achille Lemmi has been Full Professor in Statistics and Economics at the University of Siena, Italy. Presently he is Honorary Fellow of the Tuscan Universities Research Centre on Advanced Statistics for Sustainable and Equitable Development (TURC-ASESD) "Camilo Dagum" at the University of Pisa, Italy.