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) TAKAZAWA K.,Clinical usefulness of the second derivative of a plethysmogram (acceleration plethysmogram),J Cardiol,,,1993,23,,207-217,https://cir.nii.ac.jp/crid/1573668924161004544,