1. AEEG, 2006. Primo rapporto annuale sul meccanismo dei titoli di efficienza energetica [First annual report on the mechanism of energy efficiency titles], Autorità per l’energia elettrica e il gas.
2. Environmental Improvement through Economic Incentives;Anderson,1977
3. A Practical Guide for Policy Analysis;Bardach,2005
4. The Theory of Environmental Policy;Baumol,1988
5. Carrots, Sticks and Sermons,1998