1. Fyrileiv O, Mork. K. Assessment of free spanning pipelines using the DNV guideline. In: Proceedings of the 8th international offshore and polar engineering; 1998. p. 100–6.
2. Pantazopoulos MS, Crossley CW, Orgill G, Lambrakos KF. Fourier methodology for pipeline span vortex-induced vibration analysis in combined flow. In: Proceddings of OMAE’93; 1993.
3. Hansen EA, Bryndum M, Mork K, Verley L, Sortland L, Nes H. Vibrations of a free spanning pipeline located in the vicinity of a trench. In: Proceedings of OMAE’01, Rio de Janeiro; 2001.
4. On the response of a free span pipeline subjected to ocean currents;Furnes;Ocean Eng,2003
5. Det Norske Veritas. Free spanning pipelines. Recommended, practice, DNV-RP-F105; 2002.