Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Yonemitsu Kiyoshi,Research of Very Pure Metals : Its present aspect and its future prospect,Butsuri,00290181,The Physical Society of Japan,1979,34,9,771-778,https://cir.nii.ac.jp/crid/1390282680384107264,https://doi.org/10.11316/butsuri1946.34.771