Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) "HAKUNO,Motohiko and YAMAMOTO,Tadashi",EXTENDED DISTINCT ELEMENT SIMULATION OF DYNAMIC TUNNEL COLLAPSE :,Journal of natural disaster science,,Japanese Group for the Study of Natural Disaster Science,,13,2,35-55,https://cir.nii.ac.jp/crid/1542261570233506816,