@article{DE_1969_5_7_a6,
     author = {G. F. Yakovleva},
     title = {The stability of the solutions of integro-differential equations with retarded argument},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1218--1224},
     publisher = {mathdoc},
     volume = {5},
     number = {7},
     year = {1969},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1969_5_7_a6/}
}