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)
,Krein's formula for indefinite multipliers hi linear periodic Hamiltonian systems,J. Diff. Eq 230,,,2006,,,446-464,https://cir.nii.ac.jp/crid/1010000781940063534,