Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) HIRATA Katsuya and FUNAKI Jiro and TSUNO Natsuki,On the Critical Geometry of a Ring in Flow.,TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B,03875016,The Japan Society of Mechanical Engineers,2001,67,664,3101-3109,https://cir.nii.ac.jp/crid/1390001206184757888,https://doi.org/10.1299/kikaib.67.3101