@article{DAN_1996_348_1_a0,
     author = {A. A. Andryan},
     title = {A problem of {Riemann{\textendash}Hilbert} type for a nonregular system of},
     journal = {Doklady Akademii Nauk},
     pages = {7--10},
     year = {1996},
     volume = {348},
     number = {1},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DAN_1996_348_1_a0/}
}