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 "Caemmerer, Ernst von and Schlechtriem, Peter and International Association of Legal Science",Restitution/unjust enrichment and negotiorum gestio,,"Mohr Siebeck,Martinus Nijhoff",2007,International encyclopedia of comparative law,,"9783161490569,9789004163096",,https://cir.nii.ac.jp/crid/1130000796534725120