著者名,タイトル,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI) Fujiwara D.,An ‐theorem of the Helmholtz decomposition of vector fields,J. Fac. Sci. Univ. Tokyo Sect. IA Math.,,,1977,24,,685,https://cir.nii.ac.jp/crid/1370016862437937152,