1. Kiefner JF, Kolovich C, Kolovich K. Pipeline Incidents caused by mechanical damage. Presentation given at the mechanical damage technical workshop, Houston-USA; 2006.
2. The effect of dents in pipelines – guidance in the pipeline defect assessment manual;Cosham;Int J Press Vessels Piping,2004
3. API 579-1/ASME FFS-1 Fitness-For-Service, June 5, 2007.
4. B31.8 Gas transmission and distribution piping systems;ASME,2003
5. B31.8 gas transmission and distribution piping systems;ASME,2007