About Tsushima, M.
About Akita National College of Technology
About Mitachi, T.
About Nihon University
About Oikawa, H.
About Akita University
About Ogino, T.
About Akita University
About Proceedings of the Twin Coimbra International Conferences on Civil Engineering - Towards a Better Environment, CE 2009 and the Concrete Future, CF 2009