1. Tourism Development Corporation of Pakistan. http://www.tourism.gov.pk (accessed on 25 March 2003).
2. Hydrocarbon Development Institute of Pakistan, Pakistan Energy Yearbook 2001. Ministry of Petroleum and Natural Resources, Govt. of Pakistan; 2001.
3. Privatization Commission, Government of Pakistan. http://www.privatisation.gov.pk/oilgas/oilgas.htm (accessed on 25 March 2003).
4. World Energy Council. Survey of energy resources. 19th ed. London, UK; October 2001.
5. World Energy Council. Renewable energy in South Asia: Status and prospects. London, UK; November 2000.