Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) YP Vaid and D Negussey,A Critical Assessment of Membrane Penetration in the Triaxial Test,Geotechnical Testing Journal,0149-6115,ASTM International,1984-06-01,7,2,70-76,https://cir.nii.ac.jp/crid/1363670319508654720,https://doi.org/10.1520/gtj10595j