1. Hook M (2009) Licentiated thesis, global energy systems. Department for Physics and Astronomy, Uppsala University, Uppsala, pp 3–13
2. Martinez JF, Villasenor R, Rios R, Espinosa CF (2004) Springer Science + Business Media, Inc. Accepted 27 October 2004
3. Thorpe JF, Whiteley MA (1943) Thorpes dictionary of applied chemistry, vol IX, 4th edn. Longmans Green and Co, London, pp 315–403
4. Ghana National Petroleum Corporation. http://www.gnpcghana.com/home/ . Assessed 23 Nov 2010
5. Kosmos Energy, Ghana. http://www.kosmosenergy.com/ghana.html . Assessed 28 May 2011