@article{ISU_2010_10_2_a5,
     author = {V. B. Tlyachev and A. D. Ushkho and D. S. Ushkho},
     title = {Symmetry axes of planar polynomial differential systems},
     journal = {Izvestiya of Saratov University. Mathematics. Mechanics. Informatics},
     pages = {41--49},
     publisher = {mathdoc},
     volume = {10},
     number = {2},
     year = {2010},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ISU_2010_10_2_a5/}
}