%0 Journal Article %A V. K. Akhramenko %T Third order homogeneous differential equations with univalent polar variable singular points %J Differencialʹnye uravneniâ %D 1977 %P 733-734 %V 13 %N 4 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1977_13_4_a16/ %G ru %F DE_1977_13_4_a16