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) J. Congleton and N. J. Fetch,Crack-branching,Philosophical Magazine,0031-8086,Informa UK Limited,1967-10,16,142,749-760,https://cir.nii.ac.jp/crid/1362825894497017984,https://doi.org/10.1080/14786436708222774