1. Allegati
2. Quadratic Engel Curves and Consumer Demand
3. The Economics Of Climate Change Mitigation: Policies And Options For The Future;J.-M Burniaux;OECD Economics Dept. Working Papers,2008
4. An Almost Ideal Demand System;A S Deaton;American Economic Review,1980
5. Rapporto Energia e Ambiente;ENEA,2006