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 "Nielsen, Ole A.",Unitary representations and coadjoint orbits of low-dimensional nilpotent Lie groups,,Queen's University,1983,Queen's papers in pure and applied mathematics,,,,https://cir.nii.ac.jp/crid/1130282273327768704