@article{DE_1986_22_5_a0,
     author = {L. M. Berezanskii},
     title = {Development of {N.} {V.~Azbelev's} $W$-method in problems of the stability of solutions of linear functional-differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {739--750},
     year = {1986},
     volume = {22},
     number = {5},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1986_22_5_a0/}
}