Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) OKAMOTO Ryuichi and HATANAKA Hirofumi,Geothermal Investigations on the Abo Tunnel,Journal of the Japan Society of Engineering Geology,02867737,Japan Society of Engineering Geology,1981,22,2,208-216,https://cir.nii.ac.jp/crid/1390001204094330624,https://doi.org/10.5110/jjseg.22.208