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
"Aczél, J. and Dhombres, Jean G.",Functional equations in several variables,,Cambridge University Press,2008,Encyclopedia of mathematics and its applications,,9780521063890,,https://cir.nii.ac.jp/crid/1130282268723057408