%0 Journal Article %A I. A. Konoplyannik %T A certain class of third order systems with a single-valued solution %J Differencialʹnye uravneniâ %D 1975 %P 2094-2096 %V 11 %N 11 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1975_11_11_a20/ %G ru %F DE_1975_11_11_a20