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 "Gambacorta, Leonardo and Hofmann, Boris and Peersman, Gert and Bank for International Settlements",The effectiveness of unconventional monetary policy at the zero lower bound : a cross-country analysis,,Bank for International Settlements,2012,BIS working papers,,,,https://cir.nii.ac.jp/crid/1130000797144753152