TY  - JOUR
AU  - Ryszard Deszcz
AU  - Wiesław Grycak
TI  - On certain curvature conditions on Riemannian manifolds
JO  - Colloquium Mathematicum
PY  - 1989
SP  - 259
EP  - 268
VL  - 58
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.4064/cm-58-2-259-268/
DO  - 10.4064/cm-58-2-259-268
LA  - en
ID  - 10_4064_cm_58_2_259_268
ER  -