TY  - JOUR
AU  - Z. Węglowski
TI  - On two notions of curvature
JO  - Commentationes Mathematicae
PY  - 1974
SP  -  533
EP  - 536
VL  - 17
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.14708/cm.v17i2.5798/
DO  - 10.14708/cm.v17i2.5798
LA  - pl
ID  - 10_14708_cm_v17i2_5798
ER  -