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
"Lakshmikantham, V. and Deo, Sadashiv G.",Method of variation of parameters for dynamic systems,,Gordon & Breach,1998,Series in mathematical analysis and applications,,9056991604,,https://cir.nii.ac.jp/crid/1130000797608322432