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) Sumida-Takahashi Hiroki,Examples of the Iwasawa invariants and the higher K-groups associated to quadratic fields,"Journal of mathematics, the University of Tokushima",1346-7387,徳島大学,2007,,41,33-41,https://cir.nii.ac.jp/crid/1571135652278331136,