Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) SOMA Nobukazu and UTAGAWA Manabu and SETO Masahiro and CHO Akio and ASANUMA Hiroshi,MEASUREMENT OF SEISMIC SIGNAL WHILE DRILLING USING SMALL-SIZE DOWNHOLE THREE COMPONENT SEISMIC DETECTOR AND ESTIMATION OF SUBSURFACE STRUCTURE,Doboku Gakkai Ronbunshu,0289-7806,Japan Society of Civil Engineers,2004-03-21,2004,757,177-187,https://cir.nii.ac.jp/crid/1390001205602044672,https://doi.org/10.2208/jscej.2004.757_177