Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) TANAKA Kazuhiro and ITO Masamichi and KITA Hidetoshi and OKAMOTO Ken-ichi and ITO Yasuo,Glassy State and Glass Transition-Its Elucidation and New Applications. II. Correlation Between Free Volume Evaluated from Positron Annihilation Lifetime and Gas Diffusion Coefficient of Glassy Polymers.,KOBUNSHI RONBUNSHU,03862186,"The Society of Polymer Science, Japan",1996,53,12,834-841,https://cir.nii.ac.jp/crid/1390001206521888896,https://doi.org/10.1295/koron.53.834