%0 Journal Article %A I. P. Martynov %A V. A. Pron'ko %T Single-valued solutions of a class of differential equations %J Differencialʹnye uravneniâ %D 1991 %P 541-544 %V 27 %N 3 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1991_27_3_a24/ %G ru %F DE_1991_27_3_a24