TY  - JOUR
AU  - S. V. Duzhin
TI  - Infinitesimal classification of systems of two PDE of first order
JO  - Zapiski Nauchnykh Seminarov POMI
PY  - 2001
SP  - 61
EP  - 69
VL  - 279
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ZNSL_2001_279_a3/
LA  - ru
ID  - ZNSL_2001_279_a3
ER  -