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
"Shtokalo, Ĭ. Z. (Ĭosip Zakharovych)",Linear differential equations with variable coefficients : criteria of stability and unstability of their solutions ; translated from Russian,,Hindustan Pub. Corpn.,1961,International monographs on advanced mathematics and physics,,,,https://cir.nii.ac.jp/crid/1130000793906967040