Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) 笠原 順三 and 久保田 隆二 and 金井 豊,A time lapse test of seismic waveform changes during several days at a tuff area in Japan using a seismic vibrator,公益社団法人物理探査学会学術講演会講演論文集 = Proceedings of the SEGJ Conference,,東京 : 物理探査学会,2014,130,,216-219,https://cir.nii.ac.jp/crid/1520290882120937856,