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.,How long is the coast of Britain? Statistical self-similarity and fractal dimension,Science,,,1967,156,,636-638,https://cir.nii.ac.jp/crid/1573668925345822208,