@article{DAN_1992_325_5_a5,
     author = {P. A. Krutitskii},
     title = {Solution of a hyperbolic boundary value problem as a result of},
     journal = {Doklady Akademii Nauk},
     pages = {907--914},
     publisher = {mathdoc},
     volume = {325},
     number = {5},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1992_325_5_a5/}
}