1. Key World Energy Statistics;Anon,2012
2. BP Statistical Review of World Energy June 2012;Anon,2012
3. Trends in Pipeline Integrity Inspection and Rehabilitation Techniques;Mohitpour,2002
4. The structural integrity of oil and gas transmission pipelines;Hopkins,2003
5. Anon, USA’s Department of Transportation. Pipelines and Hazardous Materials Safety Administration website: http://primis.phmsa.dot.gov/comm/reports/safety/psi.html?nocache=631.