@article{DE_1977_13_3_a10,
     author = {T. M. Kerimov},
     title = {The mixed boundary value problem for a second order linear elliptic equation},
     journal = {Differencialʹnye uravneni\^a},
     pages = {477--480},
     publisher = {mathdoc},
     volume = {13},
     number = {3},
     year = {1977},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1977_13_3_a10/}
}