%0 Journal Article %A M. M. Meredov %A D. Bazarov %T A problem of Frankl' type for third order equations %J Differencialʹnye uravneniâ %D 1977 %P 100-104 %V 13 %N 1 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1977_13_1_a13/ %G ru %F DE_1977_13_1_a13