@article{MMO_2018_79_2_a4,
     author = {A. V. Dukov},
     title = {Bifurcations of the `heart' polycycle in generic 2-parameter families},
     journal = {Trudy Moskovskogo matemati\v{c}eskogo ob\^{s}estva},
     pages = {247--269},
     publisher = {mathdoc},
     volume = {79},
     number = {2},
     year = {2018},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/MMO_2018_79_2_a4/}
}