TY  - JOUR
AU  - A. S. Shube
TI  - Partial integrals, integrability and the center problem
JO  - Differencialʹnye uravneniâ
PY  - 1996
SP  - 880
EP  - 888
VL  - 32
IS  - 7
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1996_32_7_a2/
LA  - ru
ID  - DE_1996_32_7_a2
ER  -