1. Directive 2003/30/EC of the European Parliament and of the Council of 8 May 2003. On the promotion of the use of biofuels or other renewable fuels for transport.
2. UNI EN 14214 – Combustibili per autotrazione. Esteri metilici di acidi grassi (FAME) per motori diesel – Requisiti e metodi di prova; 2004.
3. Effect of biodiesel fuels on diesel engine emissions;Lapuerta;Prog Energy Combust Sci,2008
4. Biodiesel handling and use guide. 4th ed. NREL/TP-540-43672; September 2008. .
5. A comprehensive analysis of biodiesel impacts on exhaust emissions. EPA420-P-02-001; 2002.