著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) MANDELBROT B. B.,"""Fractal character of fracture surfaces of metals""",Nature,,,1984,308,,721-722,https://cir.nii.ac.jp/crid/1571980073979494656,