@article{DE_1976_12_3_a6,
     author = {A. P. Makhmudov},
     title = {The approximate solution of a certain boundary value problem},
     journal = {Differencialʹnye uravneni\^a},
     pages = {461--474},
     publisher = {mathdoc},
     volume = {12},
     number = {3},
     year = {1976},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1976_12_3_a6/}
}