@article{DE_1978_14_11_a1,
     author = {V. V. Gudkov},
     title = {Solvability of a general boundary value problem as a consequence of the solvability of an elementary two-point boundary value problem},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1935--1940},
     publisher = {mathdoc},
     volume = {14},
     number = {11},
     year = {1978},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1978_14_11_a1/}
}