TY  - JOUR
AU  - I. V. Mel'nikova
AU  - U. A. Alekseeva
TI  - Semigroup Classification and Gelfand--Shilov Classification of Systems of Partial Differential Equations
JO  - Matematičeskie zametki
PY  - 2018
SP  - 895
EP  - 911
VL  - 104
IS  - 6
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/MZM_2018_104_6_a7/
LA  - ru
ID  - MZM_2018_104_6_a7
ER  -