1. A. Garrad, C. Nath et al. Study of offshore wind energy in the EC, Report on CEC JOULE 1 contract JOUR-0072, Verlag Natürliche Energie, Brekendorf, Germany, 1994.
2. M. Kühn et al., Opti-OWECS project final report volume 0: executive Summary, Institute for Wind Energy, Delft University of Technology, Delft, Netherlands, 1998.
3. E. Hau et al., The next generation of large wind turbines—summary of the final report, ETAPlan, Munich, May 1991.
4. T.T. Cockerill et al., Opti-OWECS Phase 1 Report: structural and economic optimisation of bottom mounted offshore wind energy conveters, Institute for Wind Energy, Delft University of Technology, 1996.
5. F. Olsen, K. Rasmussen, Experience from the construction and operation of Vindeby offshore wind farm, Proceedings of OWEMES ’94 Seminar, Rome, February 1994.