@article{DE_1973_9_9_a21,
     author = {V. S. Mokeichev},
     title = {Certain boundary value problems and their approximate solutions},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1730--1733},
     publisher = {mathdoc},
     volume = {9},
     number = {9},
     year = {1973},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1973_9_9_a21/}
}