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) M. R. Garey,"Computer and Intractability: A Guide to the Theory of NP-completeness,",Freeman,,,1979,,,,https://cir.nii.ac.jp/crid/1371695769245622159,