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
"Berkum, E. E. M. van",Optimal paired comparison designs for factorial experiments,,Centrum voor Wiskunde en Informatica,1987,CWI tract,,9061963117,,https://cir.nii.ac.jp/crid/1130282269457683584