@article{DE_1974_10_12_a0,
     author = {N. V. Azbelev and T. S. Sulavko},
     title = {On the question of the stability of the solutions of differential equations with retarded argument},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2091--2100},
     publisher = {mathdoc},
     volume = {10},
     number = {12},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1974_10_12_a0/}
}