@article{ZVMMF_1989_29_1_a4,
     author = {D. S. Dzhumabaev},
     title = {Criteria for the unique solvability of a linear boundary-value problem for an ordinary differential equation},
     journal = {\v{Z}urnal vy\v{c}islitelʹnoj matematiki i matemati\v{c}eskoj fiziki},
     pages = {50--66},
     publisher = {mathdoc},
     volume = {29},
     number = {1},
     year = {1989},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/ZVMMF_1989_29_1_a4/}
}