1. Standard for welding pipe lines and related facilities;API Std. 1104,1973
2. Specification for line pipe,1987
3. Welding Process;Welding Handbook,1978
4. Field welding of steel pipe lines and installations, for high pressure gas transmission;British Gas Standard BGC/PS/P2,1985
5. Fatigue of Welded Structures;Gurney,1979