@article{oai:tsukuba.repo.nii.ac.jp:00018382,
 author = {Boumuki, Nobutaka},
 issue = {1},
 journal = {Tsukuba Journal of Mathematics},
 month = {Jun},
 pages = {117--126},
 title = {Isotropic immersions and parallel immersions of space forms into space forms},
 volume = {28},
 year = {2004}
}