Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) Sako Hirosi and Tokimatsu Kohji and Saeki Eiichiroh and Nagata Makoto and Hirata Hisashi,A Study on Penetration Mechanism of Screwed Steel Pile Based on Model Tests,Proceedings of the Japan National Conference on Geotechnical Engineering,,The Japanese Geotechnical Society,2004,JGS39,0,1545-1546,https://cir.nii.ac.jp/crid/1390282680576149376,https://doi.org/10.11512/jiban.jgs39.0.1545.0