Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Kawasaki Hiroharu and Suda Yoshiaki,Prediction of Natural Disasters and its Application to Education Using Simple Type Space Potential Fluctuation Detector,IEEJ Transactions on Fundamentals and Materials,03854205,The Institute of Electrical Engineers of Japan,2021-08-01,141,8,458-463,https://cir.nii.ac.jp/crid/1390570387146487296,https://doi.org/10.1541/ieejfms.141.458