TY  - JOUR
AU  - Thomas Hasanis
TI  - Characterizations of the sphere by the curvature of the second fundamental form
JO  - Colloquium Mathematicum
PY  - 1982
SP  - 41
EP  - 44
VL  - 46
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/cm-46-1-41-44/
DO  - 10.4064/cm-46-1-41-44
LA  - en
ID  - 10_4064_cm_46_1_41_44
ER  -