TY  - JOUR
AU  - M. N. Popa
TI  - Syzygies between the affine invariants of a system with quadratic right hand sides
JO  - Differencialʹnye uravneniâ
PY  - 1977
SP  - 2272
EP  - 2275
VL  - 13
IS  - 12
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/DE_1977_13_12_a17/
LA  - ru
ID  - DE_1977_13_12_a17
ER  -