TY  - JOUR
AU  - E. A. Kudryavtseva
TI  - Helicity is the Only Invariant of Incompressible Flows whose Derivative is Continuous in the $C^1$ Topology
JO  - Matematičeskie zametki
PY  - 2016
SP  - 626
EP  - 630
VL  - 99
IS  - 4
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_2016_99_4_a15/
LA  - ru
ID  - MZM_2016_99_4_a15
ER  -