@article{DE_1970_6_8_a1,
     author = {G. A. Kamenskii},
     title = {Variational and boundary value problems with deviating argument},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1349--1358},
     publisher = {mathdoc},
     volume = {6},
     number = {8},
     year = {1970},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1970_6_8_a1/}
}