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) Umetsu Kotaro and Fujiwara Akihiro,P systems with branch and bound for solving two hard graph problems,International Journal of Networking and Computing,2185-2839,IJNC編集委員会,2020,10,2,159-173,https://cir.nii.ac.jp/crid/1390285300177196416,https://doi.org/10.15803/ijnc.10.2_159