TY  - JOUR
AU  - I. A. Kolesnikova
TI  - Necessary and sufficient conditions for the existence of symmetry groups for systems of differential-difference equations with partial derivatives
JO  - Contemporary Mathematics. Fundamental Directions
PY  - 2010
SP  - 5
EP  - 15
VL  - 37
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/CMFD_2010_37_a0/
LA  - ru
ID  - CMFD_2010_37_a0
ER  -