@article{bwmeta1.element.desklight-4bd0c632-0ddc-4ca8-88ae-4950ff8a77b0,
author = {Thomas Hasanis},
title = {Characterizations of the sphere by the curvature of the second fundamental form},
journal = {Colloquium Mathematicae},
volume = {46},
year = {1982},
pages = {41-44},
zbl = {0496.53002},
language = {en},
url = {http://dml.mathdoc.fr/item/bwmeta1.element.desklight-4bd0c632-0ddc-4ca8-88ae-4950ff8a77b0}
}
Thomas Hasanis. Characterizations of the sphere by the curvature of the second fundamental form. Colloquium Mathematicae, Tome 46 (1982) pp. 41-44. http://gdmltest.u-ga.fr/item/bwmeta1.element.desklight-4bd0c632-0ddc-4ca8-88ae-4950ff8a77b0/