@article{DE_1996_32_4_a3,
     author = {T. M. Grozovskii},
     title = {Bifurcations of ``apple'' and ``half-apple'' polycycles in generic two-parameter families},
     journal = {Differencialʹnye uravneni\^a},
     pages = {458--469},
     publisher = {mathdoc},
     volume = {32},
     number = {4},
     year = {1996},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1996_32_4_a3/}
}