1. ANSYS user manual (Release 14.0);ANSYS,2012
2. Specification for line pipe;API,2007
3. Effects of smooth and rock dents on liquid petroleum pipelines, Phase I and Phase 2;API 1156,1999
4. Managing system integrity for hazardous liquid pipelines;API RP 1160,2013
5. Recommended practice for Risk-Based inspection;API RP 580,2013