Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) KOYAMA Masato and HAYAKAWA Yukio,A Beginner's Guide to “Shiryo” (historical documents) Seismology and Volcanology,Journal of Geography (Chigaku Zasshi),0022135X,Tokyo Geographical Society,1999,108,4,489-494,https://cir.nii.ac.jp/crid/1390001204228780160,https://doi.org/10.5026/jgeography.108.4_489