Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Sakaki Takasi,On the Determination of Copper and Bismuth in Ferro-Tungsten,Journal of the Japan Institute of Metals and Materials,00214876,The Japan Institute of Metals and Materials,1963,27,9,449-453,https://cir.nii.ac.jp/crid/1390001206481296384,https://doi.org/10.2320/jinstmet1952.27.9_449