1. Ferjefri E39 Summary English Jan 2012 http://www.vegvesen.no/vegprosjekter/ferjefriE39/English (Accessed 03, October 2016).
2. Floating bridges;Lwin,2000
3. Submerged floating tunnels − a concept whose time has arrived;Ahrens;Tunnell. Undergr. Space Technol.,1997
4. The specialist committee on deep water mooring. Final report and recommendations to the 22nd ITTC;Aage,2000
5. S. Weller, L. Johanning, P. Davies, Best Practice Report − Mooring of Floating Marine Renewable Energy Devices. Deliverable 3.5.3 from the MERiFIC Project, 2013.