@article{DE_1970_6_5_a3,
     author = {V. I. Fodchuk},
     title = {Integral manifolds for nonlinear differential equations with retarded argument},
     journal = {Differencialʹnye uravneni\^a},
     pages = {798--808},
     year = {1970},
     volume = {6},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1970_6_5_a3/}
}