@article{DE_1970_6_9_a7,
     author = {M. Kiselevich},
     title = {Differentiability with respect to the functional parameter of the solutions of differential equations with lag},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1606--1614},
     year = {1970},
     volume = {6},
     number = {9},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1970_6_9_a7/}
}