TY  - JOUR
AU  - A. S. Demyshev
AU  - V. I. Rodionov
TI  - On equivalent definition of continuous differentiability
JO  - Izvestiya Instituta Matematiki i Informatiki Udmurtskogo Gosudarstvennogo Universiteta
PY  - 2006
SP  - 39
EP  - 42
VL  - 36
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IIMI_2006_36_2_a8/
LA  - ru
ID  - IIMI_2006_36_2_a8
ER  -