著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI)
SHOR P. W.,Stretchability of pseudolines is NP-hard,DIMACS Series in Discrete Mathematics and Theoretical Computer Science,,,1991,4,,531-554,https://cir.nii.ac.jp/crid/1573668924350042752,