1. Cogeneration and district energy;International Energy Agency (EIA),2009
2. On energy efficiency (substituting the previous Directive 2004/8/EC on the promotion of cogeneration);Directive 2012/27/EC of the European Parliament and of the Council of 25 October 2012;Official J Eur Union,2012
3. Executive order e accelerating investment in industrial energy efficiency;Obama,2012
4. Energy policies beyond IEA countries – Russia 2014;International Energy Agency (IEA),2014
5. Decreto ministeriale 5 settembre 2011-Regime di sostegno per la cogenerazione ad alto rendimento;Ministero dello Sviluppo Economico,2011