Author,Title,Journal,ISSN,Publisher,Date,Volume,Number,Page,URL,URL(DOI) NAKAI TERUO,An isotropic hardening elastoplastic model for sand considering the stress path dependency in three-dimensional stresses.,SOILS AND FOUNDATIONS,0385-1621,The Japanese Geotechnical Society,1989,29,1,119-137,https://cir.nii.ac.jp/crid/1390282679588742144,https://doi.org/10.3208/sandf1972.29.119