@article{DE_1974_10_4_a0,
     author = {N. V. Azbelev},
     title = {Linear boundary value problems for functional-differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {579--584},
     publisher = {mathdoc},
     volume = {10},
     number = {4},
     year = {1974},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1974_10_4_a0/}
}