@article{DE_1991_27_6_a2,
     author = {V. V. Gorodestkii},
     title = {Polynomial representation of solutions of operator-differential equations of hyperbolic type in a {Hilbert} space},
     journal = {Differencialʹnye uravneni\^a},
     pages = {941--947},
     publisher = {mathdoc},
     volume = {27},
     number = {6},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1991_27_6_a2/}
}