Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) "河野, 俊彦 and 片桐, 重和",Research for Illumination Phenomena on Visible Light as Precursor of Earthquakes and it's Observation Method,福山大学工学部紀要,0286858X,福山 : 福山大学工学部,2000-10,24,,75-82,https://cir.nii.ac.jp/crid/1050282812578349312,