Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Takatsu Sokichi,Effects of Cobalt on Carburizing Rate of Tungsten,Journal of the Japan Institute of Metals and Materials,00214876,The Japan Institute of Metals and Materials,1979,43,4,281-286,https://cir.nii.ac.jp/crid/1390001206485631744,https://doi.org/10.2320/jinstmet1952.43.4_281