@article{DE_1977_13_4_a16,
     author = {V. K. Akhramenko},
     title = {Third order homogeneous differential equations with univalent polar variable singular points},
     journal = {Differencialʹnye uravneni\^a},
     pages = {733--734},
     publisher = {mathdoc},
     volume = {13},
     number = {4},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1977_13_4_a16/}
}