TY  - JOUR
AU  - E. V. Varenikova
TI  - Time symmetries of two dimensial nonautounomous differential systems
JO  - Problemy fiziki, matematiki i tehniki
PY  - 2010
SP  - 22
EP  - 24
IS  - 1
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/PFMT_2010_1_a3/
LA  - ru
ID  - PFMT_2010_1_a3
ER  -