@article{DE_1967_3_10_a2,
     author = {A. Ya. Khokhryakov},
     title = {A periodic boundary value problem for the differential equation $y^{(n)}+f(t,y,y',\dots,y^{(n-1)})=0$},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1643--1655},
     publisher = {mathdoc},
     volume = {3},
     number = {10},
     year = {1967},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1967_3_10_a2/}
}