%0 Journal Article %A A. Ya. Khokhryakov %T A periodic boundary value problem for the differential equation $y^{(n)}+f(t,y,y',\dots,y^{(n-1)})=0$ %J Differencialʹnye uravneniâ %D 1967 %P 1643-1655 %V 3 %N 10 %I mathdoc %U http://geodesic.mathdoc.fr/item/DE_1967_3_10_a2/ %G ru %F DE_1967_3_10_a2