@article{ZVMMF_1983_23_4_a3,
     author = {N. B. Konyukhova},
     title = {Admissible boundary conditions at an irregular singular point for systems of linear ordinary differential equations},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {806--824},
     publisher = {mathdoc},
     volume = {23},
     number = {4},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1983_23_4_a3/}
}