TY  - JOUR
AU  - B. M. Dubrov
TI  - On a class of contact invariants of systems of ordinary differential equations
JO  - Izvestiâ vysših učebnyh zavedenij. Matematika
PY  - 2006
SP  - 76
EP  - 77
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/IVM_2006_1_a10/
LA  - ru
ID  - IVM_2006_1_a10
ER  -