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 "藤重, 悟",Submodular functions and optimization,,"North-Holland,Distributors for the United States and Canada, Elsevier Science Pub. Co.",1991,Annals of discrete mathematics,,0444885560,,https://cir.nii.ac.jp/crid/1130282272333640576