@article{INTO_2020_185_a3,
     author = {O. V. Baeva and S. A. Pavlova},
     title = {On periodic solutions of the mathematical model  ``politics-economics''},
     journal = {Itogi nauki i tehniki. Sovremenna\^a matematika i e\"e prilo\v{z}eni\^a. Temati\v{c}eskie obzory},
     pages = {28--36},
     publisher = {mathdoc},
     volume = {185},
     year = {2020},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/INTO_2020_185_a3/}
}