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 "Bixby, Robert E.",Kuratowski's and Wagner's theorems for matroids,,"Mathematics Research Center, University of Wisconsin",1975,MRC Technical Summary Report,,,,https://cir.nii.ac.jp/crid/1130282272881784448