著者名,論文名,雑誌名,ISSN,出版者名,出版日付,巻,号,ページ,URL,URL(DOI)
Robert J. Zimmer,Extensions of ergodic group actions,Illinois Journal of Mathematics,0019-2082,Duke University Press,1976-09-01,20,3,,https://cir.nii.ac.jp/crid/1360011145202296448,https://doi.org/10.1215/ijm/1256049780