1. European Commission web site: http://ec.europa.eu/clima/news/articles/news_2014102401_en.htm accessed Nov 2014
2. Sridhar,G; Sridhar, HV; Dasappa, S. (2005). Green electricity from biomass fuel producer gas engine pp 1489-1492 14th European Biomass Conference, 17-21 October 2005, Paris, France.