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
"Schaar, Günter and Sonntag, Martin and Teichert, Hanns-Martin",Hamiltonian properties of products of graphs and digraphs,,Teubner,1988,Teubner-Texte zur Mathematik,,3322005011,,https://cir.nii.ac.jp/crid/1130282270536030208