@article{DE_1991_27_11_a11,
     author = {A. Yanushauskas},
     title = {On the oblique derivative problem for harmonic functions that are regular in a half-space},
     journal = {Differencialʹnye uravneni\^a},
     pages = {1947--1958},
     publisher = {mathdoc},
     volume = {27},
     number = {11},
     year = {1991},
     language = {ru},
     url = {http://geodesic.mathdoc.fr/item/DE_1991_27_11_a11/}
}