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) D. C. Drucker and W. Prager,Soil mechanics and plastic analysis or limit design,Quarterly of Applied Mathematics,0033-569X,American Mathematical Society (AMS),1952-07,10,2,157-165,https://cir.nii.ac.jp/crid/1364233271015426432,https://doi.org/10.1090/qam/48291