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) Kenji Ito and Yusuke Ujihira and Takashi Yamashita and Kazuyuki Horie,Temperature dependence of free volume of polyacrylamide gels studied by positron lifetime measurements,Radiation Physics and Chemistry,0969-806X,Elsevier BV,2000-06,58,5-6,521-524,https://cir.nii.ac.jp/crid/1361981469605074688,https://doi.org/10.1016/s0969-806x(00)00210-3