@article{INTO_2023_225_a10,
     author = {A. D. Ushkho and V. B. Tlyachev and D. S. Ushkho},
     title = {On an exact estimate of the number of real invariant lines of polynomial vector fields of degree $n$},
     journal = {Itogi nauki i tehniki. Sovremenna\^a matematika i e\"e prilo\v{z}eni\^a. Temati\v{c}eskie obzory},
     pages = {123--133},
     publisher = {mathdoc},
     volume = {225},
     year = {2023},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTO_2023_225_a10/}
}