@article{oai:tsukuba.repo.nii.ac.jp:00015871,
 author = {Vrancken, Luc},
 issue = {2},
 journal = {Tsukuba Journal of Mathematics},
 month = {Dec},
 pages = {279--292},
 title = {3-dimensional isotropic submanifolds of spheres},
 volume = {14},
 year = {1990}
}