@article{oai:tsukuba.repo.nii.ac.jp:00015847, author = {Mashimo, Katsuya}, issue = {2}, journal = {Tsukuba Journal of Mathematics}, month = {Dec}, pages = {257--263}, title = {Order of the standard isometric minimal immersions of CROSS as helical geodesic immersions}, volume = {7}, year = {1983} }