TY  - JOUR
AU  - Fabián, Marián J.
TI  - Concerning a geometrical characterization of Fréchet differentiability
JO  - Časopis pro pěstování matematiky
PY  - 1979
SP  - 45
EP  - 64
VL  - 104
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/articles/10.21136/CPM.1979.117999/
DO  - 10.21136/CPM.1979.117999
LA  - en
ID  - 10_21136_CPM_1979_117999
ER  -