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) OHTSU M.,Stack Imaging of Spectral Amplitudes based on Impact-Echo for Flaw Detection,NDT&E International,,,2002,35,,189-196,https://cir.nii.ac.jp/crid/1572543026609175424,