1. Mann P, Gahagan L, Gordon MB. Tectonic setting of the world's giant oil and gas fields. In: Halbouty MT, editor. Giant oil and gas fields of the decade, 1990–1999. Tulsa (Okla.): American Association of Petroleum Geologists; [accessed 15.05.14]. p. 50.
2. http://www.eia.gov/cfapps/ipdbproject/IEDIndex3.cfm. U.S. EIA International Energy Statistics. [accessed 16.05.14].
3. http://business.financialpost.com/2013/10/17/fossil-fuels-world-energy-council/?__lsa=cf58-ea60 [accessed 10.05.14].
4. The biodiesel handbook,2004
5. Biofuels (alcohols and biodiesel) applications as fuels for internal combustion engines;Agarwal;Prog Energy Combust Sci,2007