@article{DAN_1992_326_5_a5,
     author = {K. B. Sabitov and A. H. Isyangildin},
     title = {A {Tricomi-type} problem with a nonlocal conjugation condition for},
     journal = {Doklady Akademii Nauk},
     pages = {787--791},
     publisher = {mathdoc},
     volume = {326},
     number = {5},
     year = {1992},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1992_326_5_a5/}
}