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 "Bortolotti, F. (Fabio) and Ufot, Dorothy",Hardship and force majeure in international commercial contracts : dealing with unforeseen events in a changing world,,International Chamber of Commerce,2018,The Dossiers of the Institute of International Business Law and Practice,,9789403514635,,https://cir.nii.ac.jp/crid/1130285376604249088