著者名,タイトル,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Haggag,Using portable/in-situ stress–strain microprobe system to measure mechanical properties of steel bridges during service,SPIE,,,1996,2946,,65,https://cir.nii.ac.jp/crid/1370288394258748942,