Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) OKI Iwao,"Experimental Research on Disc Valves : 7th Report, Experimental Formulae for Discharge",Transactions of the Japan Society of Mechanical Engineers,00290270,The Japan Society of Mechanical Engineers,1960,26,165,684-690,https://cir.nii.ac.jp/crid/1390282680132207488,https://doi.org/10.1299/kikai1938.26.684