HIGASHINO Tomoki, USUI Hideo, SAKAIDE Masatoshi, SERA Wataru. A Study of Safety Measures for Fishing Boat at Osaka Bay. The Proceedings of Asia Navigation Conference 2013. 2013
USUI Hideo, SERA Wataru, INADA Yuichiro. A Study of Hanshin Port as International Container Strategy Port from the Viewpoint of Kitakyushu Area. The Proceedings of Asia Navigation Conference 2012 Kobe. 2012. 1-6