Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) 松本 芳哉 and 砂川 一郎,玉髄・めのう類の微細構造(走査型電顕観察),Journal of The Gemmological Society of Japan,0385-5090,The Gemmological Society of Japan,1977,4,1,46-47,https://cir.nii.ac.jp/crid/1390282680139614848,https://doi.org/10.14915/gsjapan.4.1_46