@article{oai:kitami-it.repo.nii.ac.jp:00007044,
 author = {山下, 聡},
 journal = {土木学会北海道支部論文報告集},
 month = {Jan},
 pages = {518--521},
 title = {砂の初期剛性の異方性},
 volume = {59},
 year = {2003}
}