@article{CMH_1963__38_139273,
     author = {Yoshie Katsurada},
     title = {On a {Certain} {Property} of {Closed} {Hypersurfaces} in an {EINSTEIN} {Space.}},
     journal = {Commentarii mathematici Helvetici},
     pages = {165--171},
     publisher = {mathdoc},
     volume = {38},
     year = {1963},
     zbl = {0198.54102},
     url = {http://geodesic.mathdoc.fr/item/CMH_1963__38_139273/}
}