Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) WATANABE Yukio,Study on Interference Effects of Upstream and Downstream Rotor of Contra-Rotating Ocean Current Turbine,The Proceedings of the Fluids engineering conference,2424-2896,The Japan Society of Mechanical Engineers,2019,2019,0,OS4-25,https://cir.nii.ac.jp/crid/1390848250131464192,https://doi.org/10.1299/jsmefed.2019.os4-25