%0 Journal Article %A V. B. Tlyachev %A A. D. Ushkho %A D. S. Ushkho %T Symmetry axes of planar polynomial differential systems %J Izvestiya of Saratov University. Mathematics. Mechanics. Informatics %D 2010 %P 41-49 %V 10 %N 2 %I mathdoc %U http://geodesic.mathdoc.fr/item/ISU_2010_10_2_a5/ %G ru %F ISU_2010_10_2_a5