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
"Williams, Kenneth S. and Hardy, Kenneth",A congruence modulo D for the index of the fundamental unit of the real quadratic field of discriminant D,,"Department of Mathematics and Statistics, Carleton University",1984,Carleton mathematical series,,,,https://cir.nii.ac.jp/crid/1130000798136192384