TY  - JOUR
AU  - V. B. Tlyachev
AU  - A. D. Ushkho
AU  - D. S. Ushkho
TI  - An estimate from above of the number of invariant straight lines of $n$-th degree polynomial vector field
JO  - Izvestiya of Saratov University. Mathematics. Mechanics. Informatics
PY  - 2015
SP  - 171
EP  - 179
VL  - 15
IS  - 2
PB  - mathdoc
UR  - http://geodesic.mathdoc.fr/item/ISU_2015_15_2_a6/
LA  - ru
ID  - ISU_2015_15_2_a6
ER  -