@article{DAN_1984_274_6_a2,
     author = {N. Yu. Kapustin},
     title = {Generalized solvability of the {Tricomi} problem for a},
     journal = {Doklady Akademii Nauk},
     pages = {1294--1298},
     publisher = {mathdoc},
     volume = {274},
     number = {6},
     year = {1984},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1984_274_6_a2/}
}