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) STEFANOFF G.,Bearing capacity of hollow piles driven by vibration,Proc. of the 9th Int. Conf. on SMFE,,,1977,1,,753-758,https://cir.nii.ac.jp/crid/1573105974376977280,