@article{oai:tsukuba.repo.nii.ac.jp:00016095,
 author = {Hashimoto, Hideya},
 issue = {1},
 journal = {Tsukuba Journal of Mathematics},
 month = {Jun},
 pages = {209--224},
 title = {Hypersurfaces in the quaternions II},
 volume = {13},
 year = {1989}
}