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 "Canadian Soil Mechanics Conference and Penner, E. (Edward) and Butler, J.","Proceedings of the fifteenth Canadian Soil Mechanics Conference, 8 and 9 November 1961",,National Research Council of Canada,1962,Technical memorandum,,,,https://cir.nii.ac.jp/crid/1130000797168946048