Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI)
角村 悟 and 外谷 健 and 石井 美樹,A study of geomagnetic storm on the basis of magnetic observations in the Japanese chain observatories,地磁気観測所要報,13425706,八郷町 (茨城県) : 地磁気観測所,1999-03,27,,1-105,https://cir.nii.ac.jp/crid/1522825128335276928,