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) PREISENDORFER R. W.,Foundations of principal component selection rules,SIO Ref. Series,,,1981,192,,,https://cir.nii.ac.jp/crid/1572543024240340608,