@article{DE_1972_8_12_a19,
     author = {V. I. Zubov},
     title = {The local solvability of a boundary value problem for ordinary differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {2251},
     publisher = {mathdoc},
     volume = {8},
     number = {12},
     year = {1972},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1972_8_12_a19/}
}