@article{oai:tsukuba.repo.nii.ac.jp:00015734,
 author = {Urakawa, Hajime},
 issue = {2},
 journal = {Tsukuba Journal of Mathematics},
 month = {Dec},
 pages = {321--347},
 title = {Minimal immersions of projective spaces into spheres},
 volume = {9},
 year = {1985}
}