@article{oai:tsukuba.repo.nii.ac.jp:00016747,
 author = {西村, 泰一 and NISHIMURA, Hirokazu},
 issue = {3},
 journal = {Cahiers de topologie et géométrie différentielle catégoriques},
 month = {},
 pages = {207--232},
 title = {Synthetic differential geometry of higher-order total  differentials},
 volume = {47},
 year = {2007},
 yomi = {ニシムラ, ヒロカズ}
}