Yasunori Nihei, Tomoki Ikoma, Minoru Kozen, Motohiko Murai and Kazuhiro Iijima. Research about Motion Characteristics of SPAR Type Offshore Wind Turbines in Wind and Wave Coexisting Conditions. Proceedings of the International Symposium on Marine and Offshore Renewable Energy, The Japan Society of Naval Architects and Ocean Engineers (JASNAOE) and The Royal Institution of Naval Architects (RINA). 2013. Paper No. S4-2. CD-ROM
Motohiko Murai, Miki Takei, Hotsuma Saeki, Yasunori Nihei, Kazuhiro Iijima and Tomoki Ikoma. Experimental study on a hydrodynamic behavior of a Semi-Submersible type FOWT. Proceedings of the International Symposium on Marine and Offshore Renewable Energy, The Japan Society of Naval Architects and Ocean Engineers (JASNAOE) and The Royal Institution of Naval Architects (RINA). 2013. Paper No. S4-4. CD-ROM
Yasunori Nihei, Midori Matsuura, Motohiko Murai, Kazuhiro Iijima and Tomoki Ikoma. A Research about Motion Characteristics of TLP type Offshore Wind Turbines in Wind and Waves. Proceedings of the International Symposium on Marine and Offshore Renewable Energy, The Japan Society of Naval Architects and Ocean Engineers (JASNAOE) and The Royal Institution of Naval Architects (RINA). 2013. Paper No. S5-4. CD-ROM
Mitsuhiro Masuda, Koichi Masuda, Tomoki Ikoma and Kuniaki Shoji. Behavior of a Pontoon Supported by a Mooring Dolphin in a Tsunami (First Report). Journal of Offshore Mechanics and Arctic Engineering. 2013. 135. 2. 021102-1-021102-7