Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) HIRATSUKA Yoshikatsu,Estimate of a Gifford-McMahon cryocooler below 2K with helium 4,The Proceedings of the Symposium on Stirlling Cycle,2424-2926,The Japan Society of Mechanical Engineers,2018,2018.21,0,C03,https://cir.nii.ac.jp/crid/1390845713078229376,https://doi.org/10.1299/jsmessc.2018.21.c03