@article{DE_1983_19_11_a6,
     author = {V. D. Ponomarev},
     title = {Existence of a solution of a two-point boundary value problem for a system of first-order ordinary differential equations},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1880--1884},
     publisher = {mathdoc},
     volume = {19},
     number = {11},
     year = {1983},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1983_19_11_a6/}
}