Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Ota Kazuo,"Polarographic Determination of Bismuth in Cast-Iron (Determination of Small Amounts of Special Elements in Cast Iron, 4th Report)",Journal of the Japan Institute of Metals and Materials,00214876,The Japan Institute of Metals and Materials,1959,23,12,708-712,https://cir.nii.ac.jp/crid/1390282681458850560,https://doi.org/10.2320/jinstmet1952.23.12_708