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 "Say, M. G. (Maurice George)","Rotating amplifiers : the amplidyne, metadyne, magnicon and magnavolt and their use in control systems",,Newnes,1954,Electrical engineering progress series,,,,https://cir.nii.ac.jp/crid/1130282271143401728