1. 1) International Energy Agency, IEA key world energy statistics, 2014.
2. 2) Saipem, Offshore pipelines -engineering and construction project references, 2012.
3. 3) Mimura, H., Some consideration on the condition of crack propagation in gas pipe line, Proceedings of 16th Japan Congress on Materials Research, Kyoto, The Society of Materials Science, Japan, 1973.
4. 6) Sugie, E., Kaji, H., Taira, T., Ohashi, M. and Simitomo, Y., Shear fracture arrestability of controlled rolled steel X70 line pipe by full-scale burst test, Transactions of American Society of Mechanical Engineers, Journal of Energy Resource Technology, Mar. , vol.106, pp. 55-62, 1984.
5. 7) Sugie, E., Matsuoka, M., Akiyama, T., Tanaka, K. and Tsukamoto, M., Propagating shear fracture in natural gas transmission pipelines, American Society for Testing Materials Special Technical Publication 945, pp. 237-246, 1988.