Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) G. R. Irwin,Analysis of Stresses and Strains Near the End of a Crack Traversing a Plate,Journal of Applied Mechanics,0021-8936,ASME International,1957-09-01,24,3,361-364,https://cir.nii.ac.jp/crid/1363951793622989568,https://doi.org/10.1115/1.4011547