@article{oai:tsukuba.repo.nii.ac.jp:00015981,
 author = {Tojo, Koji},
 issue = {1},
 journal = {Tsukuba journal of mathematics},
 month = {Jun},
 note = {B. Y. Chen and T. Nagano [2] investigated the totally geodesic submanifolds in Riemannian symmetric space, and as one of their results, the following holds.  FACT 1.1. Spheres and hyperbolic spaces are the only simply connected, ...},
 pages = {181--190},
 title = {Totally geodesic submanifolds of naturally reductive homogeneous spaces},
 volume = {20},
 year = {1996}
}