1. A.J.I., 2008. Specification for Unbonded Flexible Pipe. American Petroleum Institute, 3th ed., July 2014, (13628-2).
2. API RP 17B, 2008. Recommended Practice for Flexible Pipe. American Petroleum Institute, 4th ed.
3. ISO 13628-2, 2006. Petroleum and Natural Gas Industries-Design and Operation of Subsea Production Systems-Part 2: Unbonded Flexible Pipe Systems for Subsea and Marine Application.
4. ISO 13628-11, 2007. Petroleum and Natural Gas Industries-design and Operation of Subsea Production Systems-Part 11: Flexible Pipe Systems for Subsea and Marine Applications.
5. Liu, J.. et al., 2008. Bent collapse of an unbonded rough bore flexible pipe. In: Proceedings of the ASME 2010 29th International Conference on Ocean, Offshore and Artic Engineering. OMAE2010-20692.