Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Onose Utako and Suezawa Masashi and Imai Masato and Sumino Koji,Growth of Dislocation-Free Crystals of High-Purity Niobium in Ultra High Vacuum,Journal of the Japan Institute of Metals and Materials,00214876,The Japan Institute of Metals and Materials,1985,49,10,811-817,https://cir.nii.ac.jp/crid/1390001206486100608,https://doi.org/10.2320/jinstmet1952.49.10_811