著者名,書名,版表示,出版者名,出版年,シリーズ名,番号,ISBN,ISSN,URL "Byerly, William Elwood",Introduction to the calculus of variations,,"Cambridge Univ. Press, 1928",1928,Mathematical tracts for physicists,,,,https://cir.nii.ac.jp/crid/1130000794962808576