Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Satoshi Takagi and Takashi Usuda and Rugkanawan Kongkavitool,Nanoscale verification of hardness indenters by atomic force microscopy,材料試験技術 = Journal of Material Testing Research Association of Japan,02852470,東京 : 日本材料試験技術協会,2007-07,52,3,169-175,https://cir.nii.ac.jp/crid/1520290882272111488,