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) Soda Toshio,Sum rule analysis of two-branch excitation spectrum of liquid He4,Progress of theoretical physics = 理論物理学の進歩,0033068X,Kyoto : Publication Office,1970-10,44,4,860-864,https://cir.nii.ac.jp/crid/1523951029593814144,https://doi.org/10.1143/ptp.44.860