@article{DE_1971_7_8_a3,
     author = {L. A. Zhivotovskii},
     title = {Existence theorems and uniqueness classes of the solutions of functional equations with heredity},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1377--1384},
     year = {1971},
     volume = {7},
     number = {8},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1971_7_8_a3/}
}