@article{DE_1991_27_5_a16,
     author = {D. G. Orlovskii},
     title = {Weak and strong solutions of inverse problems for differential equations in a {Banach} space},
     journal = {Differencialʹnye uravneni\^a},
     pages = {867--874},
     publisher = {mathdoc},
     volume = {27},
     number = {5},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1991_27_5_a16/}
}